Unity allocates RAM indefinitely until freezing the computer when opening an empty project

Unity Engine
,
1

I’m having an issue for weeks now.
I’m on Windows 10, using Unity 2021.3.10f1.

Basically, I was able to work normally on my project for a while, then, at some point, I open my project and the editor eats all the RAM (which right now is 24GB of free RAM), until the computer freezes and I have to reboot it.
When I open the profiler, I see that it is “Untracked Memory” which is growing rapidly (around 20MB per second, with spikes even faster than that).
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Then, everytime I open this project, it’s the same, and I can’t work anymore.
Note that I also can’t close Unity normally, as it stalls, while still consuming RAM at an alarming rate. I always need to kill the process.

More bizarre, I can’t open a new project anymore, it stalls during the loading bar, while using all the RAM.
Last time I tried, it was stuck at importing the com.unity.purchasing/Runtime/Stores/Android/GooglePlay/AAR/Models/GoogleBillingResult.cs file.

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I tried uninstalling Unity, removed all Unity folders I could find in Program Files & AppData, removed the Registry entries. It worked for a few days like this, until the bug mysteriously reappered.

I’m getting really tired of this, I’ve been reinstalling Unity at least 10 times, different versions, but to no avail. The bug always comes back at some point. I simply can’t work on my project.

2

does editor.log have any extra info?

3

Oh my, it said this:

EditorUpdateCheck: Failed Could not resolve host: updatecheck.unity3d.com
[Package Manager] Package [com.unity.memoryprofiler] cannot be found
Curl error 6: Could not resolve host: cdp.cloud.unity3d.com
Created GICache directory at C:/Users/myname/AppData/LocalLow/Unity/Caches/GiCache. Took: 0.038s, timestamps: [19.428 - 19.466]
gi::BakeBackendSwitch: switching bake backend from 3 to 1.
Setting up 2 worker threads for Enlighten.
[Licensing::Module] Successfully updated access token: "0G2p3x_z"... (expires: 2023-09-26 09:04:48 GMT)
Curl error 6: Could not resolve host: api.unity.com
Project ID request failed, Reason: The requested URL returned error: 404 (404).
Unknown Unity Connect error (400). Please contact support at support@unity.com while processing request "https://core.hub-proxy.unity3d.com/api/projects/61320f9f-2da2-4c4a-9dbf-2883337183e7", HTTP error code 404
.Curl error 6: Could not resolve host: cdp.cloud.unity3d.com
TrimDiskCacheJob: Current cache size 0mb
Curl error 6: Could not resolve host: cdp.cloud.unity3d.com
Curl error 6: Could not resolve host: cdp.cloud.unity3d.com
[LAYOUT] About to save layout C:\Work\myproject\UserSettings\Layouts\default-2021.dwlt

And I’m currently using a Cisco VPN for work… Disabling it fixed everything!
So I guess it’s when my VPN is active, some websites are not reachable, and then Unity is confused and eats RAM like crazy.

My issue seems to be fixed then, but there’s probably a huge memory leak in Unity’s Editor code when some sites can’t be reached.

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4

if you can, report as a bug also

5

Dont know if anyone still has this Problem but for me it seems to happen when I am connected to a VPN, in my case Mullvad VPN. If active Unity keeps loading the RAM until the computer crashes.

Turning off the VPN and restarting Unity Hub and Unity worked for me to fix this. Quite annoying though

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