there is some kind of issue with these asics and many pools. I have seen on multiple pools now where hashrate is maybe 0.5TH at best and unstable, and pool side reports low difficulty shares. it seems to work always only specifically on slushpool or something?
seems to be related to extranonce or asicboost or something. I know there were arguments in these threads from someone saying they had to hack some work-around into their back end to get them to work correctly and urged the developer to make a simple change on the asic software, something about missing prefix of zeros in extranonce or something
Are you mining BSV? Their pools are horribly broken and I will definitely not be supporting this chain.