Hi,May Buu
I'm happy to hear that your situation has eased, but it seems that your computer is still not playing games at a high fps, so let's continue to have some discussions on this issue.
You mentioned that your cpu is tight, what is the model of your cpu, you can press ctrl+alt+delete to open the task manager to see the cpu usage status when you are running the game, you can also try to update the bios driver if you haven't done so.
In addition, if you have not updated the bios driver, you can try to update it as well as roll back the old version and test it.
In addition, you can turn on the memory xmp function, which will also improve some performance, this function is set in the bios, you can check your motherboard manufacturer's instructions to turn it on.
Best regards
Bobhe | Microsoft Community Support Specialist