Claymore on the other hand is faster, in average 100 h per gpu. But it is far from stable, rigs with same settings can reboot every 2 minutes or so.
I use MSI to change & control my GPU settings and get Claymore do only the mining. I also issue -tt 0 so it will not monitor the cards at all (for I had issue with GPU monitor thread hang). with those settings im able to have my rigs run for weeks without issue. Most of my downtime is user created for I wanna mess with something.