Fusion issues with V6

OK so doing a fairly complex video in resolve

Running into these isues

GPU and CPU calls - hundreds and hundreds of them every min...

3b.JPG (54.74 KiB) Viewed 826 times

3.JPG (54.1 KiB) Viewed 826 times

Audio waveform not showing in fairlight - even though they exist in Edit page

Color picker not working in fusion page

Composite clip looses alpha channel - see after and before

So I composited the TV screen but the logo and white background where not visible ...

Fusion (Resolve ) crash if adjusting any of these with clean plate - I get GPU full error then a crash

Weirdness where Fusion clip disappears for 1,2,3 or 4 frames

Showing edit and render file with matching time code...

It seems to happen on edit cuts and when deflicker is applied in color...