Well I found a nice wee tool called nvtop which seems to show the usage of my GPU.
It would seem playing a 192/24khz file with the same filters shown a few posts back the gpu is only running at around 35%.
So… Is it possible to increase this usage. Eg. offload more cpu usage to cuda?
Swapped about with the filters and can bring the gpu up to 100% so its working perfect!
I have noticed that some filters seem to use more cpu than gpu so time for a bigger cpu now that I am certain I am getting the full potential from my gpu.
Thanks @jussi_laako 