Recently, I've been having some problems with my graphics tablet. It's an old refurbished Aiptek Hyperpen 8000u, which I got several years ago for 30 bucks, so I don't really expect much from it. But anyway, lately I noticed it's been really sluggish. The cursor will trail behind for several seconds whenever I get the pen close enough to the tablet to register. I checked it out in the task manager, and found that whenever it does this my CPU usage spikes at 100%. There are two processes that are apparently related to the tablet running, tblmouse.exe and atwtusb.exe, yet neither of them seemed to be the culprits.

So I'm uninstalling and reinstalling the drivers, rebooting each time, trying to get the damn thing to work, but it's still lagging. Now of course it'll still WORK if I uninstall the drivers, right, because Windows just sees it as a mouse. That works fine, no lagging, but I don't get any pressure sensitivity. So I'm messing around with it for about an hour, and then just now, after uninstalling it for the 5th time, I look around in the folder that the driver came in, and notice a copy of atwtusb.exe sitting there. Well hey, I've tried everything else, so I double clicked it.

And, get this, it WORKS. My tablet has no drivers installed, but suddenly, with atwtusb.exe running in the background, I have pressure sensitivity with no lagging.

Also, I just now looked up the process that was spiking my CPU in the first place, and found that it was a part of AVG anti-virus. What?? My anti-virus program, which isn't even monitoring anything, is freaking out whenever I use my tablet? What's up with that?