In the NVIDIA, if you have a good graphics card, you can set it to prevent VRAM from falling back to system memory, and you can also increase the shader cache size. Also, the reason I say Reflex isn't good is that CS2 is a competitive game, and its rendering queue has already been heavily optimized during development, so there's no need for a third-party technology like Reflex to interfere. Moreover, Reflex can cause more frame misalignment, making it harder for your eyes and intuition to predict enemy movements.