Hey,

So here's my problem, I own several rx480/580 4GB and I used to be able to overclock the memory to get better mh/s for ETH.

However NOW, OCing the memory has NO effect, 1700 or 2250 has the same hashrate, Biosmoding has no effect on the hashrate aswell. WTF!

So I was getting 28 mh's with OC on 480 4gb samsung mem.  Now I'm getting 25 with and without OC or Biosmod or both.

This is what I tried:

DDU uninstaller/reinstalling everything except OS
Older drivers
atikmdag-patcher
Extended overclock limits in MSI AB (worked for a short time, I always had max mclock without setting it, and couldn't change it)

Now I'm not using these in a mining rig atm, so I'm guessing it's either a setting in bios that forces stuff OR the OS (using win 10.

Anyone can help me with this?