Hello ,
I try to understand your conversation but my english is bad and my understanding about PPT are worst.
I'm trying to make my RX Vega 56 and 64 stable ( reference card with blower ).
I'm using these for now,
[Profile_0]
Name=Vega64
GPU_P0=852;900;0
GPU_P1=991;900;0
GPU_P2=1084;900;0
GPU_P3=1138;900;0
GPU_P4=1150;900;0
GPU_P5=1202;900;0
GPU_P6=1212;900;0
GPU_P7=1395;950
Mem_P0=167;900;0
Mem_P1=500;900;0
Mem_P2=800;900;0
Mem_P3=1090;900
Fan_Min=3000
Fan_Max=4900
Fan_Target=70
Fan_Acoustic=2400
Power_Temp=85
Power_Target=0

[Profile_1]
Name=Vega56
GPU_P0=852;900;0
GPU_P1=991;900;0
GPU_P2=1084;900;0
GPU_P3=1138;900;0
GPU_P4=1150;900;0
GPU_P5=1202;900;0
GPU_P6=1212;900;0
GPU_P7=1395;950
Mem_P0=167;900;0
Mem_P1=500;900;0
Mem_P2=800;900;0
Mem_P3=925;930
Fan_Min=3000
Fan_Max=4900
Fan_Target=70
Fan_Acoustic=2400
Power_Temp=85
Power_Target=0

Some Vega 56 are running around mem 900 others around 945, core is always 1395 .
I get between 1850 and 1950 for vega 56 and 1900-2000 for 64.
If I understand mem voltage will be the same as core is this one is higher ? so no need to set up this one ?
What are the best setting to get stability and if possible the best hashrate, ( I don't care about consumption it's winter here )

Best regards