so i just recently built my pc si mpg z490 gaming plus and a 10700K and all went well, but when i wanted to play my first league game, i got 144fps and cpu boosted up to 4Ghz maybe but when i wanted to play a second game overall performance went down from load times to fps in game which was 50fps i looked at the monitor and my cpu is running at 800Mhz. i played a different game (Star wars battlefront and it stayed 800, if i restarted the pc it would stay 3.8 but after some time go back to 800. any help appreciated