I'm still having the same issue with my memory frequency. I'm not sure where else to turn since I can't seem to solve this problem on my own. Basically, anytime I adjust the fans to manual my memory will remain underclocked, Usually between 300 and 800. In some games it's not noticable, but in others Sea of Thieves for example, it's easily a 20FPS drop. This only happens when I turn fans to manual, when I use automatic the memory jumps right to 1000 and everything works fine. I looked for help with this previously and didn't get to many responses.
If anyone is able to help I would really appreciate.
CPU: Ryzen 5 2600X 3.6GHz 6-Core Processor
GPU: AMD Radeon VII
Motherboard: X470 GAMING PLUS ATX AM4 Motherboard
RAM: G.SKILL Flare X Series 16GB (2 x 8GB) - F4-3200C14D-16GFX
Drive1: Samsung - 970 EVO 500GB M.2-2280 SSD
Drive2: Samsung - 960 EVO 250GB M.2-2280 SSD
Drive3: Samsung - 850 EVO-Series 500GB 2.5" SSD
PSU: Corsair HX850i Platnium + Type 3 Cables
Monitor 1: LG 32" 32GK650F 1440p 144hz FreeSync
Case: Corsair - Obsidian 500D RGB SE ATX Mid Tower Case
Windows 10 64 bit 1903
Radeon Software Version: 19.6.1
Latest UEFI BIOS from AMD flashed
Motherboard BIOS: 7B79vA9