Samsung have 2300+HR on 860/870mv

First you must use 64 bios and your mem go on 1100mhz.

my vega 56 samsung have 2360hr and work on 1100mem/866mv and gpu on 1440/866mv
you chg your PPT table?

ODT for samsung:

Name=max1
GPU_P0=852;800;0
GPU_P1=991;801;0
GPU_P2=1084;802;0
GPU_P3=1100;803;0
GPU_P4=1125;804;0
GPU_P5=1200;864
GPU_P6=1400;865
GPU_P7=1450;866
Mem_P0=167;800;0
Mem_P1=500;800;0
Mem_P2=800;802
Mem_P3=1100;866
Mem_TimingLevel=0
Fan_P0=56;45
Fan_P1=58;51
Fan_P2=60;60
Fan_P3=62;70
Fan_P4=64;80
Fan_ZeroRPM=0
Fan_Acoustic=1800
Power_Target=0

ODT 0.2.8 wont new drive if you use 1..86  new ODT not work good


your gpu1 use to much power. try reinstal driver or chg ppt table for this gpu
your gpu0 use ultra low power:) this is super