I got CORSAIR Vengeance RGB Pro SL 16GB (2x8GB) DDR4 3200 (PC4-25600) also have a Ryzen 2700 so MAX frequency for RAM is 2933 MHz. I tried 3200 MHz enabling XMP and manually OC, but having stability problems anyways, so decided to put them at 2933MHz. Trouble comes when I try to downgrade to recommended timings manually in BIOS (F37), not being able to change CL from 16 to 15, changes make effect in BIOS but when I check into Windows using HWinfo64 I find out that all timings successfully changed except CL. Any idea about whats wrong?