Sorry for the long wait for a reply.
Currently the screens I am looking at which have experienced a frame drop use cocosbuilder to builds screens which have a number of text elements, tableViews and draw items. I have a number of custom draw items which draw directly to the render context (for things such as variable star sizes … or menu buttons with rounded corners).
It might be better to build a synthetic screen.
Another way might be to give you access to a web link but I don’t want to share that publicly
I have set the frame rate to be 30fps but if you do have tools that instrument at a deeper level it probably won’t matter.
You can contact me at firstname.lastname@example.org