Thanks @Eliovp for this tool.
I have a problem:
http://www.kepfeltoltes.eu/images/2019/03/254AMDTweak.jpg
http://www.kepfeltoltes.eu/images/2019/03/254AMDTweak_tn.jpg

Tweak shows crazy GPU values, but this is GPU0 in miner (not GPU 5 like a screenshot) and low hashrate. I think tweak not applied the values.

My rig:
Win10, 18.6.1 driver, 6xVega56@64 Sqmsung RAM.