I have a single spreadsheet with 2 windows open. The vertical split is 60/40.
When I open the file this split has not saved and I have a 50/50 split and
there is no synchronised scrolling between the 2 windows. If I click on
compare side by side with, the window reverts to 60/40 and synchronised
scrolling is effective. These settings are not saved, so on File Open, I need
to repeat this procedure.

Is there any way to save these settings or program an Auto Open macro to
present the 60/40 split with scrolling?