@JeanVW The issue @Weskeress reported sounds somewhat different than yours, which is different still than the always low fps when connected to the internet that other players report. So I'm not surprised that this particular workaround didn't help you, although it was of course worth trying. Part of the problem is that low framerates can have so many different causes, many of which are certainly or probably issues with the user's hardware or software and not the game per se. It can be difficult to disentangle all the different causes, much less address all of them separately.
Yeah.. I'm sorry it didn't work for you. I was just excited to share the "fix" with others as this game has had frame drops when moving around / rotating camera since I started. I thought it may have helped at least a little for some others. I'm sorry about the internet issue. I don't seem to have that thankfully it was just the level of detail issue that objects had to kept "rendering" which caused the drops when moving around. Now with the fix they're always rendered which stopped the drops.
That's ok. I comfort myself with the fact I'm not the only one experiencing this. The thing that baffles me, is that it's been around for some while now, but it's clearly not an easy fix. Or I'd reckon there would have been a fix from EA.
The team has not been able to reproduce this issue thus far. It will be difficult to fix unless we're able to see the issue ourselves, unfortunately.
4 weeks ago
I ran into this exact issue recently. Sims 4 would run just fine without internet connection, but would drop to ridiculously low frames when connected. After some googling, I found a steam thread (sorry I couldn't find it again to link) that had several linked solutions, but the first solution was to increase adjust the Windows Temporary Internet Files settings. In my case, the Temporary Internet Files location was blank and I couldn't change it in the interface. Once I corrected the location, Sims 4 now runs like it used to. Here's the steps I took:
***WARNING: This solution requires modifying the registry. Do not perform those steps if you are unfamiliar with registry modifications***
It might have been a windows update that broke the temporary internet files. But it's Windows, so who knows. I hope this helps someone that stumbles across this post!