Fixing memory bandwidth bottlenecks on ASRock Z370M Pro4
The second a teamfight broke out, my screen turned into a slideshow. It was almost funny how bad it was. I checked my specs and realized my ASRock Z370M Pro4 was running in single-channel mode, cutting my bandwidth down to a pathetic 21-25GB/s. I spent an hour updating my GPU drivers three times thinking that was the issue, but the FPS kept jumping between 40 and 110—what a complete waste of time. I reshuffled the RAM sticks to ensure dual-channel was actually active and bumped the frequency from 2400MHz to 3000MHz. CPU-Z showed the bandwidth jumping to 42-46GB/s, and my 1% lows in fights went from 38 FPS to 72 FPS. I actually messed up the slot placement the first time and the PC wouldn't even POST until I read the manual. Now the CPU stays around 62°C - 68°C and the flow is perfect. The in-game performance overlay shows a flat frame time line, and the motherboard is idling at 45°C - 50°C.
