Originally Posted by
adrianjball
Unfortunately that didn't help. I hid everything under the Home page, so there was just a single cute yellow page in the Structure view. It then took 50s (slow, but not too bad) to open the home page (which is a simple flat page) into the Design view. I then switched to another page that was already present on a tab in the Design view, and that took just on 3mins to open. During that time CPU core #1 was flat out at 100% and there was virtually no disk activity.
Some more information: It seems that pages without a master border open almost instantly, while pages with a master border, even a simple one, are now taking between 3mins and 7mins to open. It seems strangely random. Sometimes a page that took 3mins to open once then takes 6mins the next time.
Wow! Just had a '3min' page take 12m43s to open! That's not just REALLY, REALLY slow, that's ASTOUNDINGLY slow! Note that I'm not editing anything on these pages, just switching between them...