Solve : Random spikes that makes the PC unusable.?

1.	Solve : Random spikes that makes the PC unusable.?
Answer» So yesterday I was playing League of Legends and everything was fine. At one moment the game started to lag. But the lag was like SPIKES. From 70 fps the picture freezes, but I hear the sound of the game. After that it started to spike with 5-10fps and my mouce was like stuck. I restarted the PC and it was ok. Later I was watching netflix and it happened again, but at my whole windows. I was waiting 45-50 SECS till the PC accepter the ctrl+alt+del COMMAND. After that I checked for viruses and malwhare with Malwharebytes and AVAST, nothing happened. I checked the performance at the GPU and CPU and it was something INTERESTING: My GPU spikes from 0% to 100, then again 0-80; 0-60; 0- 90... My CPU was the same. From 2,6Ghz it became 3,8Ghz and spikes just like the GPU. I checked that when my PC was idle* PC Specs: Ryzen 5 2400G RX 570 8GB RAM idk what model is ASRock A320M-DGS 600W power I attached a picture from my GPU performance when I made those tests*

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