what mining option you have with your gtx 1070ti that you see you get betther results ?
and anyone can help me, i have one rig with 13 gtx 1070ti with afterburner to operate the OC, when the rig start all the fisrt all goes well but after some hours it has some drops hash in some gpus what could be, also notice the pc get a lot more slow, i have 2 psu with 2000w each and also changed the gpu's so the problem is not the gpu, not the psu(i think) and not the risers what could be ?
the hashrate will drop if your temp limit is set to say 60 degrees and it reaches that temp limit it will reduce power draw to lower temps therefore lowering your hashrate... thats the biggest issue I've seen with hashrate loss additionally u may lose a little hashrate on your main card if your using it as your main gpu for your monitor and not the onboard vga. Additionally, try cleaning out your cards after months of running; spray some high pressure air through them helps lower temps as well..