Issue with the limit of build elements in small area

[gusty mountain]

Hello everyone,

During the implementation of one build, my Friend and I faced with the problem: "too many builds nearby" error message.
We guess, that there is some kind of limit of elements in a "chunk" (at least, this term was used in Minecraft :)).
So, according to this, please help with next information:

• What is the limit of elements to put into the "chunk"? And maybe displayed counter, to avoid wasting time and resources in the future?
• How to find the borders of the chunk? (there is some hotkey in MN, maybe there is something in Lego Fortnite as well?)

I have recorded video with the reproduction, but cannot post it here (stored as unlisted as youtube link). Is it restricted by rules? I've seen, that there are such videos in other posts....

[steep silo]

I’m not sure if this is a bug or intention I hit build limit on a massive castle I built I have to remove the basement just to furnish half the castle. To many build pieces can cause frame drop but I hope they give us a way to know if we are getting close or increase it