I installed the Ryzen 5800x 3D after updating my MB BIOS and now the game is hitching every ten to twenty seconds. It did fine the night I performed the update and installation. The next morning this started happening. The showfps command shows an all red graph and a purple spike when it hitches. Sometimes when this happens it happens twice in a row (audio buzz and some pixels flicker). ARK, Destiniy, Warframe, SWTOR, and other games are all fine. I can see the FPS drop from 270 to 200 when the hitch occurs.
From what I understand, this had been an issue with higher end AMD CPUs and some Intel CPUs. I believe it had to do with "core parking". There had been an update that fixed this so that STO wasn't affected by it. I have my power profile setting set to avoid this.
So far my only guesses to resolve this are to reinstall all of the AMD drivers or reinstall the game itself.