Hi Tomos I'm one of your miner recently I always getting this problem on my one pc with high hash rate. any help to check the issue before its not like this? Is it because of lower difficulties on the pool? Thank you.

https://lh3.googleusercontent.com/c92GNcXVkqUqP7r_hknwH81FK5CAURD1-Wvtd2ia3aDeDPHNFMvtU4C8KHukC1CfD6_SRJWVl4zEwMEDjcan=w1920-h917-rw