Designer performance improvement with offline mode

Often when I am designing a large page, I experience slow speeds. Particularly when moving elements around the Designer, it starts to lag and can take a few seconds to register.

I’ve noticed that it lags the most when multiple changes are being saved. When I wait for those changes to fully save, the Designer becomes responsive again. It makes me wonder if an offline mode would drastically improve the performance. I think if there was at least a way to manually save changes until you’re done working, that could also help. Anyone have thoughts on this?