Stacks 3 update given me noticeable loading speed bump

I updated to the latest version of Stacks 3 over the weekend.

Loading our ‘porky’ site normally takes +/- 4 minutes but this morning it’s less than a minute.
I’ve had to quit RW, reopen it and then re-load the project (270MB) to confirm it and believe what I’m seeing.

Can anyone else with a big site confirm this?