So I've had this problem for a while where sometimes while in game where I'll move my mouse and TF2 won't register it and it fucks up a lot of my gameplay at the most inconvenient times. Does anyone know what I can do to help get this problem fixed, or should I just invest in getting a new mouse?
Mouse is iBUYPOWER MOU-IBP-003 Gaming Optical Mouse
I've just tried to and it says that I already have the best mouse drivers for my device
What's your OS? A while ago some Windows update messed up a lot of ppl's shit with mouse etc. if I remember correctly. I had the same problem as you and re-installing my OS helped with it.
try changing the usb ports or reinstall usb port drivers
if that doesn't work then you should probably get a new mouse
if you insist on not getting a mouse here are some resources that might help
https://steamcommunity.com/app/730/discussions/0/528398719786237919/
https://answers.microsoft.com/en-us/windows/forum/windows_7-hardware/mouse-randomly-freezing-help-please/5e22ef2a-fe4d-44d9-955a-9134c96408be