How do I increase each card to TDP 100%

Oh sorry forgot to mention, equihash and as we speak its sitting at 3.4 KH/s

Hi everyone.

Apologies for the limited knowledge if I say anything that sounds stupid.
So within the last week a friend of mine has invested in 2 rigs and has paid someone to build them for her. Each rig has 6 1080ti's that are overclocked and running at 1800MHz according to msi according to MSI after burner. The problem is on task manager every gpu comes up as being used at 0% apart from GPU 0 which uses anyway between 1-7%
So from 6 1080ti's overclocked the daily estimated sits at around 12USD which quite frankly doesnt seem correct, I can post pictures and try to reply to every message to help fix this problem as fast as possible, thank you