Make sure you are running it with flag -t 0 in your .bat file to disable CPU mining if you want to only use the GPU, otherwise, by default, it will use your CPU at full capacity as well.
Flypool pays out every 0.01 without any fee, you can ask for as low as 0.001 ZEC, but they take a transaction fee then. You can adjust these settings in the “Settings” tab, in your dashboard.
If you want to get payouts faster, you need more sols, so you might be interested in the following: (SOLD) A Modest Proposal - Auctioning 80+ Sols/s of dirt-cheap ZEC power! ~ under 1 minute till end! Get ~ 88 Hashes at a price for 80! - #7 by zcashoinadaily