Product: The Sims 4
Platform:Mac
Which language are you playing the game in? English
How often does the bug occur? Often (50% - 99%)
What is your current game version number? 1.67.45.1220 (October 6, 2020)
What expansions, game packs, and stuff packs do you have installed? All except for Star Wars, Vampires, Jungle Adventure, Nifty Knitting, Tiny Living, Laundry Day & My First Pet Stuff.
Steps: How can we find the bug ourselves? When in Live Mode, go into Build Mode. This doesn't happen every single time, but it seems to happen more often than not. (I've tested this on two separate saves, and this occurred on both.)
What happens when the bug occurs? The game starts lagging quite bad, even after leaving Build Mode.
What do you expect to see? No lag.
Have you installed any customization with the game, e.g. Custom Content or Mods? Never used.
Did this issue appear after a specific patch or change you made to your system? Yas
Please describe the patch or change you made. I downloaded and installed Realm of Magic.
I've done some testing on this, and the only workaround I've found is to go to Manage Worlds (the screen with the world on it, I think that's what it's called? I've only just started playing again.) and go back in. It's quite annoying.
UPDATE: The day after I posted this bug report, it actually sorted itself out. I am no longer experiencing this issue.