The Performance Monitor utility may be helpful here. Check my post here to give it a try, then we can review the results to determine if you’re hitting some kind of bottleneck. Your symptom description makes me think this is a misconfiguration (drivers?) or faulty hardware (cooling issue?) though rather than an actual performance problem.
Also, if you dislike Windows that much you should give something else a shot. PopOS or ElementaryOS might be good options for you if you’re coming from Macintosh.