yes I am using shinreal adapters mostly, but have used c-paynes and others as well without issue.
Which specific turin chips are you using on which bios versions?
Its worth mentioning the MCIO numbering is out of order and cabled kind of flipped where mcio 4 goes in the first 0-7 lanes and mcio 3 goes in 8-15 so you end up cabling 4,3 then 6,5 then 8,7… assuming you are leaving the mcio config x16 in all the bios options.
I have run x4x4x4x4 for storage and x8x8 for NICs, and x4x4x8 in one weird case, simultaneously with the x16 GPUs.