Yesterday, I finally decided to run a test. I remembered that my PC's front audio jack has some weird, FAULTY noise, so I suspected it might be causing that delayed and imprecise feeling. I unplugged the cable that connects the front audio ports to the motherboard (usually connected to the HD AUDIO header).
After unplugging it, I noticed an improvement in my aim. It wasn't immediate, because I'd almost forgotten what it felt like to have a truly precise mouse. But after a few matches, I noticed how much more consistent things felt and realized that there really was an improvement.
I believe this fixed MY problem. Give it a try and let me know if it helps you too!
P.S. I've been browsing this forum for a while, reading all kinds of posts trying to fix this issue. I'd already tried everything, including RAM timings, BIOS tweaks, and Windows tweaks, but nothing worked.
