When there is a lot of action, if a player produces a lot of input at the same time and changes his weapon, the weapon may not change in the other game or it may not change correctly in his game. When it happens, the player ends up with the wrong weapon, but the sprite may remain unchanged. It will play the sound of another gun when firing, this will result in a cascade effect and will cause a desync, because weapons have different properties. It is hard to reproduce and it may happen when the player tries to change his weapon while he his firing.
When there is a lot of action, if a player produces a lot of input at the same time and changes his weapon, the weapon may not change in the other game or it may not change correctly in his game. When it happens, the player ends up with the wrong weapon, but the sprite may remain unchanged. It will play the sound of another gun when firing, this will result in a cascade effect and will cause a desync, because weapons have different properties. It is hard to reproduce and it may happen when the player tries to change his weapon while he his firing.