Hi Lexlima.  I am using using claymore 11.2 as this is the most stable my rigs has ever been.

your fan probably come on of off due to how hot the card goes. its is probably at around 45-55 degrees c.

below is my config file which has been running stable for 9 days now.

7 card system, with RX580 8gb cards.  cards reach a tmp of around 60 degrees. 6 X powercolor cards fan spin all the time, Sapphire card which fan goes on and off.

running amd bitchain drivers and cards have been modded. Still getting 30Mh's per card

setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100
EthDcrMiner64.exe -epool ssl://eu1.ethermine.org:5555 -ewal 0x0f1c8f60fa11079829db7cfe8a383b2c4763bc6a.miner -epsw x -mode 1 -ftime 10 -esm 0 -tt 60,60,60,60,60,60,30 -fanmin 60,60,60,60,60,60,10 -fanmax 100,100,100,100,100,100,40 -tstop 72,72,72,72,72,72,72 -cclock 1100 -mclock 2100 -cvddc 850 -mvddc 860 -wd 0 -eres 3 -gser 2  

see how you get on.

Vik