Forum Discussion

Bluebellflora's avatar
5 hours ago

Lagging and stuttering game performance on Macs with M4 chips

This thread is specifically for players using a Mac with M4 chip who have noticed a significant drop in game performance since patching in September 2025 as there has been a small increase in users reporting this recently.

Please do not post here if you use any other Mac, look for an existing thread on your issue or start a new one.

If you are using a Mac with M4 chip post here if you are experiencing laggy gameplay, stuttering, freezing, low fps. This should be thoroughly tested in a clean game as described here to discount existing user data interference. This is testing specific hardware and operating system.

Please post your symptoms and your Mac hardware and operating system. Click on the Apple in the top left corner of your Desktop then About This Mac. Then, click on More Info... which will open System Settings. Scroll down to the bottom and click on System Report. We need the hardware overview and the Graphics/Display overview. All the info required is shown using a red arrow in the below screenshots.

  • are you using an external display? If so what is the size and resolution?
  • does this happen in windowed and fullscreen mode or just one?

Models posted so far:

M4 Mac mini
(waiting for more info)

M4 MacBook Air
16GB memory
(waiting for more info)

10 Replies

  • Only1Rat's avatar
    Only1Rat
    Seasoned Rookie
    18 days ago

    I play on the M4 mac mini, however since installing the tiny patch yesterday and disabling a few packs with the pack selector, my game has been feeling noticeably slower. I've tried repairing the game and deleting cache files, nothing seems to work. 

  • Only1Rat's avatar
    Only1Rat
    Seasoned Rookie
    6 days ago

    I followed the steps and it did not noticeably improve performance. I still experience lag and slowness that shouldn't be there on such a new machine.

  • Bluebellflora's avatar
    Bluebellflora
    Hero+
    6 days ago

    Only1Rat​ 

    Maybe you have something running in the background using a lot of resources? Have you checked CPU and memory usage in Activity Monitor?

  • Only1Rat's avatar
    Only1Rat
    Seasoned Rookie
    6 days ago

    I have not checked the activity monitor however I only play with my browser open in the background, which only has a few tabs open. Should I try playing with absolutely nothing open in the background?

  • Bluebellflora's avatar
    Bluebellflora
    Hero+
    4 days ago

    Only1Rat​ 

    Yes, close all other apps. Some browsers generally use a ridiculous amount of memory and the web pages you have open can also have an affect on system performance. What about stuff running in the background? Anything significant will often have an icon in the top right corner of the menu bar. 

  • Only1Rat's avatar
    Only1Rat
    Seasoned Rookie
    2 days ago

    I closed all apps and tried again. Sadly, the problem still persists. More specifically, the camera stutters a lot and also feels slower to move around, especially when hosting parties or when speeding the game up. However, the game still loads really really fast for me, which seems really strange considering the other issues. Another observation I've made is that my computer doesn't heat up as much as it used to when playing the game, however I also haven't been playing for long sessions as I did before, so take this with a grain of salt.

  • Bluebellflora's avatar
    Bluebellflora
    Hero+
    2 days ago

    Only1Rat​ 

    Does this happen when playing in windowed mode and fullscreen? Or just one? When in fullscreen do you have Game Mode enabled? If so, does it happen when it is disabled?

    Could you set up a new user account on your Mac and play the game in that account to see if the performance is still slow?

  • I'm playing on version 1.118.242.1230. Just as the title states, the game is running poorly on this version and now when I run the game in full screen mode, I can only get 30 fps. My fps usually stays around 60 when I'm in windowed. I'm experiencing random lag spikes and when a sim turns on a computer or television, the game lags severely. The fps drops to around 26. I am not playing with mods or any expansion packs, this is all happening on base game.

    My game was installed in the normal directory on Mac, I did not change the location or do anything differently. I have uninstalled and re installed this game multiple times. I really don't want to give up but I was not expecting the game to run so poorly on a 16GB computer, even if it is a MacBook Air. 

    Also, my storage isn't full. I still have 117.94 out of 245.11GB left.