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I'm not to familiar with genoil, but I believe you can mess with grid size the command is --cuda-grid-size Default is 8192 I'm not confident in how this work 100% I'm using a different miner my self. Sorry I can't be more helpful, but good luck!

Thanks, which miner are you on?

There is nothing holding me to Genoil its just the first one I got working well.

I have been using CCminer and claymore dualminer. Mostly CCminer for DGB, it's has been working great with solo and pool mining

Thanks, I'll check those out.