Only Pool that doesnt give rejected shares for CCminer is HashHarder !
Suprnova and Harcore lots of rejected with ccminer with nvidia cards.
Yup there seems to be an issue currently with nvidia, can you try to use
--diff-multiplier 256 ?
that should get you accepted shares
otherwise stay on hashharder, they're doing pretty well and its vital to the coin to level out hashrates
with --diff 256 it works nice. I now switched from
to your pool, since the payouts seem way to low for my hashrate there. estimate payout on your pool already exceeds the payout for 3 blocks from hasharder