The deadzone changing is a result of a game issue. I wrote "next match" earlier when that should be next round. Here is an example of the issue. Some of the numbers are estimates, I didn't save the real numbers.
Round 1:
Round starts with 10% game deadzone = deadzone of about 6400
Change 5% to 30% = deadzone setting of let's say 12,000
Change 30% back to 5% = deadzone of 4260
Round 2:
Round starts with deadzone of 5% and value of 4260
Change game deadzone to 10%. The value is now around 8,000, not 6400
Change game deadzone to 30%. The value is now around 15,000, not 12,000Change game deadzone to 10%. Finish the round.
Round 3:
Round starts with deadzone of 10% and a value of 6400
- - -
These numbers are estimates but they give you the idea of what's going on. I reproduced this twice but couldn't a third time. I don't actively play this game so there is a chance that it's just random and occurs on its own.
In what direction do they occur mostly? Up, right, down, left?
I only checked left/right X axis but I wouldn't be surprised if it was on the Y axis too. It's in steps of 256, vsync doesn't affect it.
This is easily visible using a deadzone tool on the house map, master bedroom, look at the wallpaper.