What Is The Best optimized Ccminer Miner To Mine Lbry With?

right now I'm getting 478 Mh/s with 1080TI 75%pwr +100core +0mem using CcMiner Alexis built in with Awesome Miner
if the an optimized miner that can get higher Mh/s? I noticed with this one sometimes there is a 10-30sec delay starting all the GPUs.