I could Imagine that the search function might impact the performance, if a lot of the map is revealed and if the function needs to scan the whole revealed part every time.

The search does not scan the surface. The map tags will be created when the part of the map is created and the search ...

I could Imagine that the search function might impact the performance, if a lot of the map is revealed and if the function needs to scan the whole revealed part every time.

I don't know anything about programming or how the search function is coded, but I had an idea for optimization, if needed ...