I do not know if I am the only one, but I do have a strange behaviour on LSM, if I reach a certain amount of building assets (seems also related to each category somehow).
I use default settings with texture and mesh sharing, game runs on PC with 4770 I7 and 32 GB RAM, 8 GB Radeon RX 580.


E.g. Between one subscribed asset to the other (buliding only, neither props, nor trees nor vehicles), LSM makes a "jump" of 700 MB more than before in between theme properties and ingame, so at the very end.
There is no error message shown, game starts as usual.
But in this case I do have a game lagging any few seconds (FPS 0 for less than one second - remaining FPS stable as usual for approx. 7 to 15 seconds)

If I unsubscribe to the new bulilding asset, the above shown problem is gone. Sometimes I may add 2 further buildings of the same section without having this problem. Or cut out an old one and add 4 new ones.
Seems not to be RAM related, because adding vehicles, props or trees do not cause any issue, even if used RAM is much more than before.

I had this bug starting with 15.8 GB RAM in use ("jumped" that time to 16.5 GB), now using 20.3 GB RAM (+- same amount of buildings (skipped prefab of some modder pack assets i do not use, unsub of building assets from 2015 and 2016, just added vehicles, props and trees) and just have this issue today when LSM makes a "jump" to shown 21 GB after subscribing to one or two further buliding assets...