Quote from: P00P135 on Today at 02:41:18 PM

Quote from: Andor9505 on Today at 10:00:58 AM

Use the latest Poloniex miner
Driver 19.3
-No Bios mod
-rxboost 50
-mt 1
Write in private if I can help.

Don't download anything from random people on the internet.

So I upgraded to PhoenixMiner 5.3b and AMD driver version 19.7.5. Those changes did not change anything!
Then I added command line options -rxboost 50 -mt 1 and voila - all cards except 1 are above 30MH/s again :-)
Some further tuning is required and I will monitor the amount of memory errors in HWinfo64.
Since the rig is in a remote location and I log in using Chrome remote desktop I dont want to do any BIOS mods before I get to go on site.
Thanks for the tip to use rxboost, mate!