How to stop texture flickering in Metro Exodus Enhanced?

I was shocked when my CPU hit 91-95℃ per AIDA64 in the wasteland, making textures flicker like a broken TV. I spent half an hour cleaning dust from the radiator, but the temperature only dropped by 1℃, which felt completely futile. I then used GamePP Resource Scheduler to set the main game process to Realtime and lowered background process priorities. This dropped core temperatures to 78-83℃ per AIDA64 and smoothed out the frame time to a stable 22-28ms per RTSS monitoring.