I would try the mysterious nonspecific USB devices first, then the Xperia thing that's probably a phone, then other stuff.
If your keyboard and mouse have custom drivers, they could also be buggy in some way too, and it may be worth finding out what those custom drivers are actually doing that's worth using them instead of generic drivers.
Before all that, it might be worth trying to connect a gamepad and see if that either fixes the issue or allows you to play with that gamepad, just in case.