I'm using Mad Catz R.A.T 5 and recently I started having problems with the my mouse scroll wheel. When i'm scrolling up or down in google chrome, steam or anything else, my mouse scroll wheel isn't responding sometimes or jumps up or down which is really weird. I tried this mouse on Windows 7 ultimate 64-bit and Windows 10 64-bit, tried connecting the mouse usb cable to a different location in my pc, and even a different pc and i'm still having this problems, I also tried a clean reinstall of the mouse drivers, clean the mouse wheel from dumb and tried restarting my pc as well. Nothing seems to be working and it's getting really annoying, could you guys help me out? Thanks =]
You have to clean your scroll sensor. Dust/hair/etc. can block its work or it can wok in inappropriate way. You can refer to this video for how-to's. Video is about R.A.T 9, but i think it should be almost the same it fifth.
Blow into the scroll whell. It worked for my Steelseries Sensei Raw.
This has been annoying me for months, and was fixed in seconds.
edit - stopped working again.