Hello,
Thanks for contacting us about speeding up your page edits. When you make changes in the editor around 90% of that is done locally within your browser, The best way to speed that up would be to make sure you don’t have any extensions in the browser that may be using up a lot of resources or causing a bottleneck when processing or try a different browser to see if that speeds it up for you. It also would not hurt to check with your host to see if you’re hitting a resource or request limit on your server on the off chance that it slowing it down, however, this is uncommon as its usually only a few database queries every now and then that are sent back to the server during the editing process.