File Taking 2 Minutes to Save!

My design file is now about 2,300 lines, and is literally taking 2 minutes to save!

Is this normal?

Can I do anything to improve this? Turn off some checking, tweak my laptop’s settings or something?

I’m running under Windows 10 with a 2 year old Dell XPS13 with 8Gb RAM, so a reasonably high spec machine…

Best wishes,
Antony.