Hi Max4dmoon,
You’re absolutely right, that does seem rather high for the light map density. I apologize if I missed this on some of the assets. I’m happy to hear the rest of the pack is much better overall now. Luckily adjusting the light map resolution on the assets is very quick and easy to do across the whole pack. Changing the values on all of the assets to whatever you want would only takes 20-30 minutes. The thing that makes me a bit sad however, is I would absolutely update this immediately to save you all that quick 20-30 minutes. I am just a bit worried however how long the update will take to release to everyone lol and at that point if it is worth it or not unfortunately.
In any case thank you for bringing this to my attention and to the attention of others so that they are aware of a simple adjustment to the assets. I will be speaking with Epic once they have streamlined their update process a bit and I promise st some point in the future this quick fix well be updated on my end so that no one else has to worry about it 
I hope you are satisfied with the rest of the pack and the quality level that I have strived to achieve with the Modular Building Set. Thank you