So as the title says during summer for the first time after 2 years of not having any kind of problem I have now. During this season where the temperature of my country is at around 30+C all day I am gaming at constant 71-75C CPU temps and around 60 on GPU. I am facing a problem where as I play at those temps my CPU temp will sharply decrease from 71-75C to around 50-55C making my GPU usage drop from 90-95% to 30-40% resulting in a massive fps drop count at around 20-30fps from 100+ it doesn't last long but it is quite annoying and frustrating to lose not because of skills but because of hardware issues. I did some research but I didn't find any reason to why my temperatures drop from my CPU. Some of the games I play Destiny 2, Overwatch, Rust, Rainbow Six Siege. I would really appreciate some help. Thank you for your time.
Specs:
CPU: AMD FX 8320
CPU Cooler: Hyper Evo 212
GPU: GTX 1060 Gaming X Edition 6GB
MB: MSI 970 Gaming
Ram: Hyper Furry 2x8GB 1866Mhz
PSU: CoolerMaster Silver 600Watts