Hello,
Hope will help people outhere. I’m doing this since 2000 on my GPUs, back than Riva TnT 64 mb.
10c less on your GPU can count a lot in game performance specially if you are close to frying the VRAM.
When cooling down PC components I always focus first on VRAM. CPU and GPU can throttle down VRAM will fry and takes time to replace/repair GPU or buy a new one.
Lock your FPS to reduce even further the temps
Good Luck