Extreme slowdown when zooming in on the world map

I keep getting extreme slowdown when linking a bunch of airports together to plan ahead for my world tour.

Just now

Don’t mind the spaghetti mess (it makes sense in my mind), that’s how the game links them together (I edit the pln file later to get them in the right order). I just need them all up so I know where I’ve ‘been’ already.

The problem is, when I paste coordinates into the search box it zooms in all the way and enters that nearly impossible to operate sub 1 fps state. Some smaller airports also require you to zoom in that far before they become clickable.

Is there any way around this slowdown? (resetting the route obviously works, but then my visual reference is gone)

No community content, not a new bug, submitted to Zendesk.