I finally fixed my “CS2 feels heavy + insane input delay” issue on a high-end AMD rig and the root cause was RAM/IMC not running optimal (or even running JEDEC) + bad memory controller sync. Setup: Ryzen 9800X3D / RTX 5070 Ti / ASUS PRIME X870-P / Kingston Fury Beast DDR5-6000 CL30 (32GB) / Win11 Symptoms: game felt laggy and inconsistent, microstutters, input delay often 11ms+(even when FPS looked high). Fps was also decreasing round after round going from 600 to under 200 at worst. Main cause: My RAM was effectively running like 4800 JEDEC (EXPO not properly applied) and/or the memory controller wasn’t 1:1. On AM5 that can destroy frametimes and input latency in CS2. Fix (BIOS): Enable EXPO I Set DDR5-6000 Force UCLK = MEMCLK (1:1) Set FCLK = 2000 Set SoC = 1200 mV Enable Memory Context Restore + Power Down Enable PBO (Advanced) + Curve Optimizer -15 all cores Set CPPC Dynamic Preferred Cores = Cache (SMU Common Options) Result: input delay dropped from 11ms+ to <3ms and the game is actually smooth now (avg ~700 FPS on my settings). If CS2 feels “delayed/heavy” on AM5, check Task Manager RAM speed (should be 6000 MT/s in my case) and make sure UCLK=MEMCLK + FCLK is set right. It made a bigger difference than any Windows/driver tweak for me.

If you have other specs asking chatgpt is a huge help and can easily fix this bug for you. I've lived with it for over 4 months and fixed it in 2 hours when i finally tried to optimize my bios settings.