After the load on the pool servers have been reduced(rigs have moved back to solomining), the rejected share-rate has improved on the pool to 2.54% (us server)
6x 1060 3g sp-mod #10
https://i.imgur.com/9zUlSMx.pngthank u very much for the info. that report should help me to fix this issue faster
btw, error codes are on the way. they are not implemented yet because i'm thinking of moving to stratum protocol and implement them there
P.S. some possible issues are already fixed
P.P.S i will appreciate if u share the info about how much return was higher while solo mining