I'm posting my problem here as a final resort since I've already tried everything I could possibly think of, yet nothing worked.
Last month I bought a Huion 420 off of ebay, downloaded the drivers from the website and experimented with the active area settings until I find the most comfortable ones for me. Everything was working perfectly fine until 2 days ago. My cursor started moving way too fast for seemingly no reason, and the sensitivity shot up at least 10 times higher than before, completely messing up my aim. Thing is, the sensitivity in the settings is set to 1x, I have raw input off ( ever since I got the tablet ), Tablet support is off, and anything else that can possibly change the speed / latency of the cursor. I checked the tablet settings and everything was still absolutely the same. I unplugged replugged the tablet in another USB port, changed the battery, even reinstalled the drivers and reinstalled osu all together, yet nothing proved effective. I'm confused as to why this would happen. No one could've possibly messed with the settings / tablet either since, this all happened while I was in game.
Help?
Edit: I also forgot to mention that I changed the pen's tip and that it freezes / jumps randomly in game.