excuse me, i want to know why when i mine nuko coin at nuko.oldbeyond the display about my MH/s is different with my monitor says..

at that website 35-39 MH/s , then at my monitor 62-67 MH/s..

is there any one can help me?

i try to use claymore and ethminer

but it doesn't change anything, i use 2x1080ti

thank u beforee...