Very large .uexp file


I recently noticed that one of my maps generates an extremely large .uexp file, almost 500MB. Compared to the other maps it’s more than 10 times larger.

It contains few actors. A pretty large landscape, but other maps has bigger landscapes.

I also noticed that the landscape actor for this specific level has a MUCH larger instanced section count. It seems that if I create a large single landscape, that is one instance. Then if I use the add tool it keeps adding instances for each click For this level I pretty much added all those quads as I as going, resulting in thousands of instances. Could that be generating this humongous .uexp file?