The video card does not load in all games

People cho to do, the video card in rdr 2 was loaded before it was up to 100% right now 60% and gives out 40-44 fps and freezes up to 20-30
V ks was under 400 fps now 120 maximum and constant freezes up to 30-40. The mother still started to give false temperatures to the process (although it almost does not even heat up to 70) and I had to chop off PROCHOT in Ryzen Master. I updated and reinstalled firewood, Windows, reset BIOS, overclocked, removed overclocking nothing.
System
R5 3600
Gtx 1660
16gb 2933mhz
Wd blue 7200 1tb
Asrock B450 pro4-f
It seems like a powerful iron for cs, why would the FPS fall so recently, I think that it is possible that the mother gives the video card false temperatures toko I xs how to remove the restriction, even in msi afterburner set the temperature limit to max. In addition, in tests like Furmark and Cinebench r15, the load on the video card is normal and gives the same result as before, but in games everything is bad. I have been looking for 3 days all over the Internet how to fix it. Help, I've been playing with a headscarf for 3 days already ... Thanks in advance