Many users have reported this issue G7 7700 Latest BIOS has fixed the issue.     
[IMAGE]   Dell g7 7700: Intel(R) Core(TM) i7-10750H CPU @ 2.60GHzNVIDIA GeForce RTX 2070 - 8192 МбSSD 512 GB16 GB RAM144 HZ monitor When I start play games my GPU drop rate from 1850 to 300 after 10-15 minutes, but temperature on GPU 75-80°C.
Dell g7 7700 drops GPU rate