I also got recommendation from Aquatica itself, that it would be smarter to use smaller 8" Acrylic instead of 9.25" glass dome. I used 9.25" same as my friend with Seacam, and we never had any problems.
I have used Aquatica A5D MK III at 120m-122m max (rated to 130 with deep spring kit), and had problems below 110m. I could not press record button, I was pressing it but with no effect, it couldn`t start recording. When I came shallower, say to 107m I would press it and than it functioned well. Than I would went deeper.
My friend is using Seacam offshore version (rated to 200m) and never had problems at all. Max depth was 123-125m...
I think Nauticam has option to upgrade housing to 150m.