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Under Consideration for 2021.3.X, 2022.3.X, 6000.0.X, 6000.2.X, 6000.3.X, 6000.4.X
Votes
14
Found in
2021.3.45f1
2022.3.51f1
6000.0.24f1
6000.5.0a1
Issue ID
UUM-85256
Regression
No
macOS stutters in a minimal project
Reproduction steps:
1. Open the attached “Repro“ project
2. Open the “Assets/Scenes/Scene.unity“ Scene
3. Build and Run the project
4. Observe it
Expected result: No stutters are present
Actual result: The sphere stutters
Reproducible with: 2021.3.45f1, 2022.3.51f1, 6000.0.24f1
Reproducible on: M2 Max 15.0 (User’s platform), M1 Max MacOS 14.6.1, Windows 10
Not reproducible on: No other environment tested
Notes:
- The reproduction depends on the specific setup. The user has noted that stuttering was more prominent on the 2021 Macbook Pro M1 Max than his 2023 Macbook Pro M2 Max. On the built-in retina display, I was unable to see any stuttering, but the user mentioned otherwise, meanwhile, on external monitors the stutter was very clear.
- The user mentioned that in 2023.1.20f1 the stutter did not occur, but I found it reproducible.
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UDN_56f31da6-955c-40e0-8db3-b1c4fdd04d17
Nov 02, 2025 06:16
This seems like the same issue I'm having on Windows machine.
For me this issue only reproduces on Build in Windowed mode and with VSync enabled (tripple buffering the worst). The huge stutters feels like Time.timeScale is randomly changing and sometimes staying at 0.
For some context, this was tested on a plugged in laptop with rtx 5070, Laptop monitor (150% scaling, 2560x1600), 2nd monitor (100% scaling, 2560x1440). The issue reproduces on both monitors but 2nd monitor is way more frequent.
We've currently quick fixed the issue by fully removing vSync selection from the build.
Reproduces on a new URP project with Unity versions:
6000.0.61f1
6000.0.57f1
2022.3.21f1
Once again, not sure if this is the same issue, cause this is tagged for Mac only. But the description seems to match.
I was actually trying to find another vsync issue all of the team members are having, where GPU is at 90% when vsync is ON, and is at 15% when vsync is OFF. But was unsuccessful on a minimal project.
TomTheMan59
Jul 01, 2025 13:15
I can’t even take gameplay footage of my game without the stutter or launch my game on mac. Hope this will be fixed soon!
midsummer
Jun 07, 2025 21:03
This is a critical issue for me. It's very difficult for me to work on my game, because I'm stuck in 2021.1, trying to work around all of its numerous bugs. Upgrading the project to any of the more modern editor versions introduces unbearable MEGASTUTTER, which looks like dozens of frames dropped every few seconds in both editor and player, for no clear reason.
bigbearstudios
Mar 20, 2025 15:30
I don't know if this is the same issue but I'm seeing a noticable stutter when running the editor player on Mac. Running an M3 Pro chip and when profiled the CPU is spiking with 100ms > 200ms spend in RenderLoop (99.1% to 99.6% self). Appear to happen every 5000 to 6000 frames roughly.
I've removed everything from the scene and the issue can still be seen from within the profiler.
Brutal0l0
Feb 21, 2025 21:13
I had same issues with my project on M1 Pro machine. For me its blocker to transition from 2021.3 to newer version. Simple character controller with capsule stuttered with no visible reason.