@hitmand @ipp2
i switched 18.6.1 drivers on a 470 4/8g mixed rig to the blockchain drivers to see if that's causing some issues with the 'invalid job' and @hitmand's 3 minute / gpu precompile time, but no - all should be fine with BC drivers, so at least now i know its not the driver that is making the problem.
Can you guys tell me which SRB version are you using? I see @hitmand uses 1.8.8 , have you tried 1.8.9 ?
Are you mining monero or some other CN/R coin ?