Im pretty sure you have lag because how do you can explain that using the same configuration with 178.3 version and can play with 0 LAG and installing the new one every interaction between townies has to wait at least 3 to 5 secs to responds, and you can see the same problem if you see them interacting between them and not you interacting with them, there is a lag included in the new WW version and im not speaking about playing animations because you can play them ok its just the normal game that its impossible to play. Im sorry but i dont trust you ahaha
Okay, don't trust me if you want, I don't care. You asked for testing, I reported I don't have YOUR issue after my test. I'm sorry this is happening in your game, but it doesn't in mine.
Jfyi, this is called simulation lag and it happens sometimes even with the base game.
I don't have any simulation lag since the new WW update. I only play with MCC, BD, BDP, WW, and I noticed nothing wrong during gameplay, even using my family with two teens, one children, two pets and two adults. I added one sim inside the household while on livemode using the gallery, and I didn't noticed any lag whatsoever for this
second test. NPCs are interacting as intended, so are my playable sims. I currently play with the last WW version since yesterday on my main save and I have no issues, using version 179.1.