Emby and Plex slow sync solutions

I have been using infuse for a long time by now but every time I setup a new device it takes ages to sync with big libraries and when new episodes or movies are added to server it takes a lot of time to sync new changes
what i find it weird that why don’t we have an option to just use the server without syncing cause I see that we can just browse the server folders easily without syncing everything its just missing the search button because its a pain trying to swipe around thousands of movies.

Agree the index and sync maybe can work in background.