I've been having some serious issues with my PC's performance lately. I built it in February, but after a bad capacitor blew on the motherboard and ruined my CPU, I recently replaced the damaged parts. Initially, everything seemed fine after a clean install of Windows, and I was getting good frame rates in games like Fortnite and CS2. However, every day for the past couple of days, the performance tanks out of nowhere, regardless of what settings I try. The issues persist even after various troubleshooting attempts and driver reinstalls. My CPU and GPU temperatures are normal, and it seems like my GPU is not underclocking or anything at the moment, but I can't figure out why this is happening. I'm at my wit's end and really need some advice on how to fix this for good!
3 Answers
This might sound a bit off, but is your PC possibly trying to use the integrated GPU instead of your dedicated one? Make sure to disable the iGPU or set your dedicated GPU as the primary. That could be the reason why you’re seeing performance dips, especially in games.
Have you checked if anything might be auto-updating in the background? Sometimes these updates can steal resources without you knowing. Also, keep an eye on your CPU and GPU temperatures; if they’re too high, it could throttle performance, but it sounds like you’re monitoring that already.
Have you cleaned out any dust from your case recently? Dust buildup can affect performance because it causes overheating or airflow issues. It’s a good idea to give it a thorough cleaning to ensure everything is running smoothly.

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