Mocha AE Corner Pin (Support Motion Blur) doesn't work, but Corner Pin does.

I’ve tracked different surfaces and I can’t apply Corner Pin (Support Motion Blur) without the image becoming pixelated or disappearing. It works fine with Corner Pin and everything works and looks as it should.
I’ve successfully used Corner Pin (Support Motion Blur) with some layers but not others - I can't find the reason why this should be the case.  Can't see what I’m doing wrong to prevent all my tracks/pre-comps having Corner Pin (Support Motion Blur) applied.
Windows machine, using Mocha AE and latest After Affects 2023.  Resolution of video clip and comp is 2704 x 1520, 
resolutions of my pre-comps are the smae - content within them are just .png's and .jpg's.

Thanks in advance for any help or guidance.