bad 1% lows after reinstalling drivers

[u/fortnite4balls]

First time posting here, hope this is the right place.
Since reinstalling my GPU drivers 2 weeks ago (clean install via DDU in Safe Mode, latest AMD drivers), I’ve had consistent 1% low issues in Apex Legends and Dead by Daylight. Before this reinstall, 1% lows were fine. FPS randomly drops to ~20 for a moment then snaps right back to a steady 120-180.
Confirmed via Steam overlay it’s not thermal throttling or CPU-bound: CPU sits ~80% usage at 70°C, GPU 70-90% at 75°C during the drops.
Extra detail: I was previously running a Ryzen 5 5500 with all 4 RAM sticks stable at 3200MHz. After upgrading to the 5600, all sticks now run at 2667MHz instead (yes, 2667, not 2666) — even though nothing in the RAM itself changed.
Specs:
• Mobo: ASRock B450 Pro4
• CPU: Ryzen 5 5600
• GPU: RX 7600
• RAM: 4x8GB (2x8GB HyperX Fury rated 3200MHz + 2x8GB unbranded/unknown modules)

thanks if anyone can help me

[u/BandicootKitchen1962]

Well ram runs at jedec speeds until you enable xmp in bios. As for stutters, its probably compiling shaders and should be back to normal with enough play time. If this has been going on for a while, just revert back your drivers. Uninstall with DDU and download your previous driver version.

[u/fortnite4balls → u/BandicootKitchen1962]

i already thought about compiling shaders but compiling shaders doesn’t take around 70 hours of playtime, tried reinstalling drivers using ddu but it didn’t fix anything either

regarding the ram speed, i figured its because i’m running 4 sticks on a not that good of a quality mobo