Finally someone who knowledges the hash rate difference issue. I have 4 vega 56s. While SRBminer reports a steady 1850ish hash/s, pool only repots ~6.9Kish hash/s for the last two weeks (24 hour averages). So each card is reported to have an extra 100 hash/s on SRB. Tried XMRig AMD and hash rate is close to 24 hour average. SBR also seems to be much stabler then pool report/other miners. I really hope SRB isn't intentionally showing higher and more stable hash rate than reality.