Any map addon that doesn't use MapEditor?
Map editor gives me terrible frame rates however I installed another mod that doesn't require map editor and its not giving me any performance issues. Are there any more such mods?
Not sure what you are asking for, mods to build or edit maps?
Menyoo will allow you to build and save maps as xml files - they should not impact your FPS if properly designed and you don't go crazy with entities.
If you want just maps, check out the Maps section.
For example, for Menyoo:
There are maps also that don't require map editing mods.