I don’t know if you’ve already seen this:
But seeing yours, always 4 digit figures, this is probably a bit excessive. Maybe your metadata is the issue here in some way (single change affects hundreds and/or thousands of entries)? But in general you’re not alone with your issue (slowness with larger libraries) lately. I’ve seen several threads that might be related and labeled either with “ticket in” or “under investigation”. Let’s see if some official may show up to dive into your issue specifically.