I forgot to ask- what version are you running? I tried 2.4, 2.5 and 2.6B. I was having the best luck on 2.4 but all 3 do the DEVFEE issue for me unfortunately. I tried 2.6 today thinking it might not happen but it did

2.5d
10hrs isnt enough.
i get no devfee errors. been running about 3 days straight at this point. on an 8GPU rig making 228MH/s
try adding "-coin eth" to your startup bat file
is there any power difference in your previous miner and phoenix miner?
yes. Phoenix uses about 10-20 more watts than Claymore