I suspect this is a memory problem based on your description, but there is no way to know for sure.
Updating AMD drivers can't really hurt but they don't really do as much as people think. Flashing the BIOS should be fine, my 3900X ran on everything from F4 to F34... however sometime around F20ish something was changed with memory and this caused stable settings on previous BIOS to no longer work without additional tweaking.
The only caveat to that would be F34 (and maybe later betas) add capsule support which will prevent you from going back to a lower version without using Q-Flash+ (flashback/rear button controls). Worst case you can swap to the backup BIOS as long as you don't let it flash both chips.
Do you have "XMP" enabled?
Updating AMD drivers can't really hurt but they don't really do as much as people think. Flashing the BIOS should be fine, my 3900X ran on everything from F4 to F34... however sometime around F20ish something was changed with memory and this caused stable settings on previous BIOS to no longer work without additional tweaking.
The only caveat to that would be F34 (and maybe later betas) add capsule support which will prevent you from going back to a lower version without using Q-Flash+ (flashback/rear button controls). Worst case you can swap to the backup BIOS as long as you don't let it flash both chips.
Do you have "XMP" enabled?
