nightmare with prores raw.

Hi,

Prior to my question here is what equipment I'm using:

FS5II recording prores rawHQ to the shogun inferno
Editing on windows 10, latest version of PP, latest version of nvidia studio drivers

i9-7920x
64gb ddr4 ram
gtx1080 6gb

My issue is when I'm editing the pro res raw files, I keep getting the error
"Frame substitution recursion attempt aborting after multiple attempts"

This happens sporadically and turns all the frames from the clips black.

Solutions I've tried:

deleting all preview and cache data and re rendering
Turning off GPU acceleration. 

Any advice would be MASSIVELY appreciated. 
Im aware that prores raw has only recently come out of beta for PP but expected it to be much more stable than it currently is.

Thanks