OS:Windows 10
Steam versions for all games.
Whenever I open any of the Spideweb software games(Tested on Avernum 1-3, and Avadon 1-2) my mouse courser IMMEDIATELY jumps to the top of the screen and will swiftly drift back to the top of the screen anytime I move the mouse. This basically makes all of the games unplayable.(I don't even have time to click anything before the drift brings it to the top of the screen). I don't have any issue with drift in any other game. I have played these games previously on this computer with no issues.
::edit::
I'm an idiot, it was simply my plugged in PS4 controller lying on the ground causing the issue.