Flashed all cards back to original bios....
There's something funny going on with wattman.

I have a 1920 threadripper with 12 cores and hashing with 11 (1 core to keep system responsive)
I have Large Page Supoort Enabled and hash at around 90 per core = ~1000

Wattman settings for the vega56's    945 mem / -30 core  - 20 power
(Got it to mine at 1080 mem once with one card at 1.000 volt mem and it hashed nearly 2000 ?!?! then it crashed after 15 secs.)

if i turn on HBCC it does mines at 900+880 = ~ 1780 per card
Stak settings 1522+1512
The card with the monitor attached is set to 900 mem to keep things stable...

All nice and well , rig is hashing around ~7500 with threadripper and 4 x vega 56's @ ~950 watts.

Point is, when i reboot cards hash @ around 550+550 = 1100. And everything in wattman looks the same.
But for some reason HBCC has changed and doesnt show any  changes  in wattman.
Settings look exactly as before rebooting.

If i adjust the slider , (any way) , it starts hashing @ 900 + 880 again.

So wattman does not correctly set HBCC by itself after reboot, and have to set is for all 4 cards again each time.

 i  have 32gb quad channel mem and 70.0000 swap file on fast NVME SSD.

First have to start stak cpu and then stak gpu , otherway around it bugs / hangs...

Any tips and tricks ?