Uuuuh replies arent exactly helpful here so imma chime in a tiny bit
Unfortunately I cant give you a solution since I've never had a 10th gen intel cpu to test on, so for all I know the fps are what you should be expecting
When checking for CPU usage in games make sure to change to "logical Processors" in task manager (or whatever monitoring you use) since most games wont use all cores of a cpu (so the total usage will always be somewhat low); if some of the processors regularly cap out/get close to, then everything normal and that's just the fps you should be expecting
Then, while imo super unlikely, make sure your ram isnt shitting the bed while playing
And watch the temps on your cpu (and ig gpu too) since you might be throttling
If all that's normal you're gonna have to start troubleshooting; think googles gonna be more helpful there than me who's going through generic steps