Hammer editor cannot be launched on systems with 32+ CPU cores (threads)

[geotavros]

The error it gives: Out of thread ids. Decrease the number of threads or increase MAX_THREADS_SUPPORTED

This issue was reported to me (not my finding). And the possible solution is described here:

https://developer.valvesoftware.com/wiki/Fatal_Error_Out_of_thread_ids

https://steamcommunity.com/sharedfiles/filedetails/?id=3444051259