delamination on larger surfaces

I've been noticing some delamination (layer separation), but only on solid infill and top layers, and only on larger surfaces

Initially, I tried reducing speed, but didn't notice any improvement

There are no noticeable issues on short lines, so I think this is something to do with acceleration, which I didn't realise was a thing, but there are indeed settings for this in OrcaSlicer

Update:

Reducing acceleration does seem to have resulted in less severe delamination, but it hasn't gone away completely

So I think I need to reduce it just a little bit more