mlpo
commented
1 year ago I see the same problem: in most games running inside Sandboxie, I observe a FPS drop compared to launching it outside the sandbox. Often, these drops are quite random (lasting only a few frames).
While investigating this problem, I noticed a difference in GPU usage when the game is running in the sandbox and when it’s running outside:
- outside the sandbox, the GPU is used at 95~98% on a more or less constant basis;
- in the sandbox, we have a lower usage and regular drops (which correspond to when the game freezes for a few frames).
Here's a graph illustrating this GPU usage in the sandbox:
e-t-l
Describe what you noticed and did
I tested many games and most of them had lower performance when running inside Sandboxie. The problem is fixed once you disable Security Isolation inside Sandboxie but I'd like to know if there's a way to fix this without disabling that option.
Two examples of my issue: Borderlands 300 FPS (outside Sandboxie or with Security Isolation disabled) 140 FPS (inside Sanboxie)
Supraland 200 FPS (outside) 100 FPS (inside)
Many other games also have the same issue but games with high fps (100+) are the ones in which you can see a huge difference.
I checked CPU and GPU usage while running in and out of sandboxie and I had almost the same usage on both tests. Neither of them was near 100% usage during these tests. I also tried a new Sandboxie and Windows installation and the problem persisted.
How often did you encounter it so far?
No response
Affected program
Seems to happen in all games that have high FPS
Download link
N/A
Where is the program located?
The program is installed both inside and outside the sandbox.
Expected behavior
Games should run at higher FPS
What is your Windows edition and version?
Windows 11 22H2
In which Windows account you have this problem?
Not relevant to my request.
Please mention any installed security software
Microsoft Defender
What version of Sandboxie are you running?
Sandboxie 1.9.2
Is it a new installation of Sandboxie?
I recently did a new clean installation.
Is it a regression?
No response
In which sandbox type you have this problem?
In a standard isolation sandbox (yellow sandbox icon).
Can you reproduce this problem on a new empty sandbox?
I can confirm it also on a new empty sandbox.
Did you previously enable some security policy settings outside Sandboxie?
No response
Crash dump
No response
Trace log
No response
Sandboxie.ini configuration
No response