diff --git a/CompanionLib/SwiftServer/MethodHandlers/XCTestRunMethodHandler.swift b/CompanionLib/SwiftServer/MethodHandlers/XCTestRunMethodHandler.swift
index b1e3959c2..338d380cf 100644
--- a/CompanionLib/SwiftServer/MethodHandlers/XCTestRunMethodHandler.swift
+++ b/CompanionLib/SwiftServer/MethodHandlers/XCTestRunMethodHandler.swift
@@ -47,6 +47,22 @@ struct XCTestRunMethodHandler {
   }
 
   func transform(value request: Idb_XctestRunRequest) -> XCTestRunRequest? {
+    guard var transformed = transformMode(value: request) else {
+      return nil
+    }
+    if request.hasKillAllRunningApplications {
+      transformed.killAllRunningApplications = request.killAllRunningApplications
+    }
+    if request.hasDisableXctestDebugLogging {
+      transformed.disableXCTestDebugLogging = request.disableXctestDebugLogging
+    }
+    if request.hasActivateSuspended {
+      transformed.activateSuspended = request.activateSuspended
+    }
+    return transformed
+  }
+
+  private func transformMode(value request: Idb_XctestRunRequest) -> XCTestRunRequest? {
     let testsToRun = request.testsToRun.isEmpty ? nil : Set(request.testsToRun)
     switch request.mode.mode {
     case .logic:
diff --git a/CompanionLib/XCTest/XCTestDescriptor.swift b/CompanionLib/XCTest/XCTestDescriptor.swift
index 9aa1f3576..fc211ef4c 100644
--- a/CompanionLib/XCTest/XCTestDescriptor.swift
+++ b/CompanionLib/XCTest/XCTestDescriptor.swift
@@ -87,6 +87,9 @@ final class XCTestBootstrapDescriptor: XCTestDescriptor, CustomStringConvertible
     if request.isLogicTest {
       return
     }
+    guard request.killAllRunningApplications else {
+      return
+    }
     try await XCTestBootstrapDescriptor.killAllRunningApplications(target)
   }
 
@@ -133,7 +136,8 @@ final class XCTestBootstrapDescriptor: XCTestDescriptor, CustomStringConvertible
       arguments: request.arguments,
       logger: logger,
       processLogDirectory: logDirectoryPath,
-      waitForDebugger: request.waitForDebugger
+      waitForDebugger: request.waitForDebugger,
+      activateSuspended: request.activateSuspended
     )
     let testLaunchConfig = TestLaunchConfiguration(
       testBundle: testBundle,
@@ -151,7 +155,8 @@ final class XCTestBootstrapDescriptor: XCTestDescriptor, CustomStringConvertible
       coverageDirectoryPath: coverageConfig?.coverageDirectory,
       enableContinuousCoverageCollection: coverageConfig?.shouldEnableContinuousCoverageCollection ?? false,
       logDirectoryPath: logDirectoryPath,
-      reportResultBundle: request.collectResultBundle
+      reportResultBundle: request.collectResultBundle,
+      disableXCTestDebugLogging: request.disableXCTestDebugLogging
     )
     return IDBAppHostedTestConfiguration(testLaunchConfiguration: testLaunchConfig, coverageConfiguration: coverageConfig)
   }
@@ -239,12 +244,12 @@ final class XCodebuildTestRunDescriptor: XCTestDescriptor, CustomStringConvertib
 
 // MARK: - Private Helper
 
-private func buildAppLaunchConfig(bundleID: String, environment: [String: String], arguments: [String], logger: ControlCoreLogger, processLogDirectory: String?, waitForDebugger: Bool) async throws -> ApplicationLaunchConfiguration {
+private func buildAppLaunchConfig(bundleID: String, environment: [String: String], arguments: [String], logger: ControlCoreLogger, processLogDirectory: String?, waitForDebugger: Bool, activateSuspended: Bool? = nil) async throws -> ApplicationLaunchConfiguration {
   let stdOutConsumer = FBLoggingDataConsumer(logger: logger)
   let stdErrConsumer = FBLoggingDataConsumer(logger: logger)
 
   guard let processLogDirectory else {
-    return applicationLaunchConfiguration(bundleID: bundleID, environment: environment, arguments: arguments, waitForDebugger: waitForDebugger, stdOut: stdOutConsumer, stdErr: stdErrConsumer)
+    return applicationLaunchConfiguration(bundleID: bundleID, environment: environment, arguments: arguments, waitForDebugger: waitForDebugger, stdOut: stdOutConsumer, stdErr: stdErrConsumer, activateSuspended: activateSuspended)
   }
 
   // Both mirrors are created before either is awaited, so the two file writers are opened concurrently.
@@ -254,7 +259,7 @@ private func buildAppLaunchConfig(bundleID: String, environment: [String: String
 
   let stdOut = try await mirroredConsumer(stdOutFuture)
   let stdErr = try await mirroredConsumer(stdErrFuture)
-  return applicationLaunchConfiguration(bundleID: bundleID, environment: environment, arguments: arguments, waitForDebugger: waitForDebugger, stdOut: stdOut, stdErr: stdErr)
+  return applicationLaunchConfiguration(bundleID: bundleID, environment: environment, arguments: arguments, waitForDebugger: waitForDebugger, stdOut: stdOut, stdErr: stdErr, activateSuspended: activateSuspended)
 }
 
 private func mirroredConsumer(_ future: FBFuture<AnyObject>) async throws -> DataConsumer {
@@ -265,7 +270,7 @@ private func mirroredConsumer(_ future: FBFuture<AnyObject>) async throws -> Dat
   return consumer
 }
 
-private func applicationLaunchConfiguration(bundleID: String, environment: [String: String], arguments: [String], waitForDebugger: Bool, stdOut: DataConsumer, stdErr: DataConsumer) -> ApplicationLaunchConfiguration {
+private func applicationLaunchConfiguration(bundleID: String, environment: [String: String], arguments: [String], waitForDebugger: Bool, stdOut: DataConsumer, stdErr: DataConsumer, activateSuspended: Bool? = nil) -> ApplicationLaunchConfiguration {
   let io = FBProcessIO<AnyObject, AnyObject, AnyObject>(
     stdIn: nil,
     stdOut: FBProcessOutput<AnyObject>(for: stdOut),
@@ -278,6 +283,7 @@ private func applicationLaunchConfiguration(bundleID: String, environment: [Stri
     environment: environment,
     waitForDebugger: waitForDebugger,
     io: io,
-    launchMode: .relaunchIfRunning
+    launchMode: .relaunchIfRunning,
+    activateSuspended: activateSuspended
   )
 }
diff --git a/CompanionLib/XCTest/XCTestRunRequest.swift b/CompanionLib/XCTest/XCTestRunRequest.swift
index df973a40d..0fb2db81d 100644
--- a/CompanionLib/XCTest/XCTestRunRequest.swift
+++ b/CompanionLib/XCTest/XCTestRunRequest.swift
@@ -69,6 +69,13 @@ public struct XCTestRunRequest {
   public let collectLogs: Bool
   public let waitForDebugger: Bool
   public let collectResultBundle: Bool
+  /// Whether to kill every running application before the test host launches. Defaults to the
+  /// historical behaviour; a driver that owns the device's app state turns it off.
+  public var killAllRunningApplications: Bool = true
+  /// Whether to drop the test runner's `_XCT_logDebugMessage` traffic instead of logging it.
+  public var disableXCTestDebugLogging: Bool = false
+  /// When set, passed through to the test host's `activate_suspended` launch option.
+  public var activateSuspended: Bool?
 
   public var testBundleID: String? {
     guard case let .identifier(identifier) = bundle else { return nil }
diff --git a/FBControlCore/Configuration/ApplicationLaunchConfiguration.swift b/FBControlCore/Configuration/ApplicationLaunchConfiguration.swift
index 245f0a9d8..90e7437cf 100644
--- a/FBControlCore/Configuration/ApplicationLaunchConfiguration.swift
+++ b/FBControlCore/Configuration/ApplicationLaunchConfiguration.swift
@@ -20,12 +20,15 @@ public final class ApplicationLaunchConfiguration: ProcessLaunchConfiguration {
   @objc public let bundleName: String?
   @objc public let waitForDebugger: Bool
   public let launchMode: ApplicationLaunchMode
+  /// When set, passed as the `activate_suspended` key to `launchApplicationAsyncWithID`.
+  public let activateSuspended: Bool?
 
-  public init(bundleID: String, bundleName: String?, arguments: [String], environment: [String: String], waitForDebugger: Bool, io: FBProcessIO<AnyObject, AnyObject, AnyObject>, launchMode: ApplicationLaunchMode) {
+  public init(bundleID: String, bundleName: String?, arguments: [String], environment: [String: String], waitForDebugger: Bool, io: FBProcessIO<AnyObject, AnyObject, AnyObject>, launchMode: ApplicationLaunchMode, activateSuspended: Bool? = nil) {
     self.bundleID = bundleID
     self.bundleName = bundleName
     self.waitForDebugger = waitForDebugger
     self.launchMode = launchMode
+    self.activateSuspended = activateSuspended
     super.init(arguments: arguments, environment: environment, io: io)
   }
 
diff --git a/FBControlCore/Configuration/TestLaunchConfiguration.swift b/FBControlCore/Configuration/TestLaunchConfiguration.swift
index 6dacd9772..5eb252967 100644
--- a/FBControlCore/Configuration/TestLaunchConfiguration.swift
+++ b/FBControlCore/Configuration/TestLaunchConfiguration.swift
@@ -25,8 +25,9 @@ public struct TestLaunchConfiguration {
   public let shouldEnableContinuousCoverageCollection: Bool
   public let logDirectoryPath: String?
   public let reportResultBundle: Bool
+  public let disableXCTestDebugLogging: Bool
 
-  public init(testBundle: BundleDescriptor, applicationLaunchConfiguration: ApplicationLaunchConfiguration, testHostBundle: BundleDescriptor?, timeout: TimeInterval, initializeUITesting: Bool, useXcodebuild: Bool, testsToRun: Set<String>?, testsToSkip: Set<String>?, targetApplicationBundle: BundleDescriptor?, xcTestRunProperties: [String: Any]?, resultBundlePath: String?, reportActivities: Bool, coverageDirectoryPath: String?, enableContinuousCoverageCollection: Bool, logDirectoryPath: String?, reportResultBundle: Bool) {
+  public init(testBundle: BundleDescriptor, applicationLaunchConfiguration: ApplicationLaunchConfiguration, testHostBundle: BundleDescriptor?, timeout: TimeInterval, initializeUITesting: Bool, useXcodebuild: Bool, testsToRun: Set<String>?, testsToSkip: Set<String>?, targetApplicationBundle: BundleDescriptor?, xcTestRunProperties: [String: Any]?, resultBundlePath: String?, reportActivities: Bool, coverageDirectoryPath: String?, enableContinuousCoverageCollection: Bool, logDirectoryPath: String?, reportResultBundle: Bool, disableXCTestDebugLogging: Bool = false) {
     self.testBundle = testBundle
     self.applicationLaunchConfiguration = applicationLaunchConfiguration
     self.testHostBundle = testHostBundle
@@ -43,6 +44,7 @@ public struct TestLaunchConfiguration {
     self.shouldEnableContinuousCoverageCollection = enableContinuousCoverageCollection
     self.logDirectoryPath = logDirectoryPath
     self.reportResultBundle = reportResultBundle
+    self.disableXCTestDebugLogging = disableXCTestDebugLogging
   }
 }
 
diff --git a/FBSimulatorControl/Commands/SimulatorApplicationCommands.swift b/FBSimulatorControl/Commands/SimulatorApplicationCommands.swift
index 7bb230bec..624af87f4 100644
--- a/FBSimulatorControl/Commands/SimulatorApplicationCommands.swift
+++ b/FBSimulatorControl/Commands/SimulatorApplicationCommands.swift
@@ -432,6 +432,9 @@ public struct SimulatorApplicationCommands: ApplicationCommands {
     if let stdErrPath {
       options["stderr"] = stdErrPath
     }
+    if let activateSuspended = configuration.activateSuspended {
+      options["activate_suspended"] = activateSuspended
+    }
     return options
   }
 
diff --git a/XCTestBootstrap/Strategies/ManagedTestRunStrategy.swift b/XCTestBootstrap/Strategies/ManagedTestRunStrategy.swift
index 91e2a3f2c..10f41550e 100644
--- a/XCTestBootstrap/Strategies/ManagedTestRunStrategy.swift
+++ b/XCTestBootstrap/Strategies/ManagedTestRunStrategy.swift
@@ -42,7 +42,8 @@ public final class ManagedTestRunStrategy {
       timeout: configuration.timeout,
       testHostLaunchConfiguration: testHostLaunchConfiguration,
       testedApplicationAdditionalEnvironment: runnerConfiguration.testedApplicationAdditionalEnvironment,
-      testConfiguration: runnerConfiguration.testConfiguration
+      testConfiguration: runnerConfiguration.testConfiguration,
+      disableXCTestDebugLogging: configuration.disableXCTestDebugLogging
     )
 
     try await TestManagerAPIMediator.connectAndRunUntilCompletion(
diff --git a/XCTestBootstrap/TestManager/FBTestManagerAPIMediatorIDEInterface.m b/XCTestBootstrap/TestManager/FBTestManagerAPIMediatorIDEInterface.m
index 4b4b3fefb..b59d174e2 100644
--- a/XCTestBootstrap/TestManager/FBTestManagerAPIMediatorIDEInterface.m
+++ b/XCTestBootstrap/TestManager/FBTestManagerAPIMediatorIDEInterface.m
@@ -197,6 +197,9 @@ - (id)_XCT_testCaseDidFailForTestClass:(NSString *)testClass method:(NSString *)
 
 - (id)_XCT_logDebugMessage:(NSString *)debugMessage
 {
+  if (self.context.disableXCTestDebugLogging) {
+    return nil;
+  }
   [self.logger log:[debugMessage stringByTrimmingCharactersInSet:NSCharacterSet.whitespaceAndNewlineCharacterSet]];
   return nil;
 }
diff --git a/XCTestBootstrap/TestManager/TestManagerContext.swift b/XCTestBootstrap/TestManager/TestManagerContext.swift
index c5fd0acdf..2ddbf4827 100644
--- a/XCTestBootstrap/TestManager/TestManagerContext.swift
+++ b/XCTestBootstrap/TestManager/TestManagerContext.swift
@@ -15,19 +15,22 @@ import Foundation
   @objc public let testHostLaunchConfiguration: ApplicationLaunchConfiguration
   @objc public let testedApplicationAdditionalEnvironment: [String: String]
   @objc public let testConfiguration: FBTestConfiguration
+  @objc public let disableXCTestDebugLogging: Bool
 
   @objc public init(
     sessionIdentifier: UUID,
     timeout: TimeInterval,
     testHostLaunchConfiguration: ApplicationLaunchConfiguration,
     testedApplicationAdditionalEnvironment: [String: String],
-    testConfiguration: FBTestConfiguration
+    testConfiguration: FBTestConfiguration,
+    disableXCTestDebugLogging: Bool
   ) {
     self.sessionIdentifier = sessionIdentifier
     self.timeout = timeout
     self.testHostLaunchConfiguration = testHostLaunchConfiguration
     self.testedApplicationAdditionalEnvironment = testedApplicationAdditionalEnvironment
     self.testConfiguration = testConfiguration
+    self.disableXCTestDebugLogging = disableXCTestDebugLogging
     super.init()
   }
 
diff --git a/proto/idb.proto b/proto/idb.proto
index 90cb4f989..55c015f8f 100644
--- a/proto/idb.proto
+++ b/proto/idb.proto
@@ -1159,6 +1159,9 @@ message XctestRunRequest {
   bool wait_for_debugger = 12;
   CodeCoverage code_coverage = 13;
   bool collect_result_bundle = 14;
+  optional bool activate_suspended = 15;
+  optional bool kill_all_running_applications = 16;
+  optional bool disable_xctest_debug_logging = 17;
 }
 
 message XctestRunResponse {