It's not just chrome though. I can't play any games either because they all run at 20 fps, and even other small programs will max out the cpu.
Ok first you should try to determine if it's a hardware or a software problem.
Things you could try to isolate possible causes are
- Check if the OS is utilizing all of your CPU's cores, and if those cores are activated (ie not parked; check in task manager / ressource monitor / with a 3rd party tool like CPU-Z or HWInfo)
- Check if the CPU's cores are running at max speed under load (eg during a stress test like Prime95), and don't get throttled due to overheating
- Temporarily disable all power saving functions on OS level (power plan "High Performance"); check if the problem persists
- Temporarily disable all power saving functions of your CPU in your motherboard's BIOS; check if the problem persists
- Boot into Windows Safe Mode; check if the problem persists
- Try to revert back to a Windows restore point created before the problem surfaced (this should be considered a last resort, since you might lose registry settings and thus software installed after the time the restore point was created could cease to function properly)
Some advice on analyzing this kind of issue can be found here: How to Check CPU Throttling in Windows 10
I solved my issue with resetting windows 10. I think I was backdoored and just didn't know where to look in the registry. Thanks for your help anyway.