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  • Content in the Editor window slows down the whole computer

This is quite a strange issue for me, I have notice that the content display in the editor window greatly impacted the graphic performance of my mac (Mac Mini 2018, UHD630). For example, I have a path2d node display in the editor, the whole UI of mac slows down and start to lag. If I run the project in Godot in this condition, the frame rate is low like 32-50 range. However, if I just move the Path2D display out of the view in the editor, frame rate goes back to 60 at run time. Same thing happen to view zoom level, if I zoom out of a map and have more object in the view in the editor window, whole thing slow down. If I zoom in with less objects or nodes display on the editor window, then things are smooth again.

This affect not only Godot, even if I leave the Godot editor window open and use other app, the whole MacOS ui start to lag and slow. I guess this is caused by Godot took out too much GPU rendering power, and cause this issue. May be it is because my mac GPU (Mac Mini 2018, UHD630) is too weak, anyway, just like to know if there is a way or setting in Godot editor to improve the problem. Or it is better just to keep less nodes or objects in display in the editor window to avoid rendering done in the editor. Thank you.

Does the issue occur with GLES2? Maybe the GPU doesn’t have as good GLES3 support and therefore is getting some slowdowns. I’d also look at updating your drives if possible, as out of date drivers could be impacting performance.

Sounds like the Mac mini doesn't have the sufficient capacity to cool itself and is reaching temps where it starts throttling.

I think there is a setting in godot editor for frame update rate to drop when it is minimized and I do believe it is on by default. You can try adjusting CPU use setting though, seems it should be governed by the Low Processor Mode Sleep Usec and Unfocused Low Processor Mode Sleep Usec settings.

Alas I can't seem to locate any GPU related setting even though I have a vague memory of one existing. I might be misrecalling however.

The editor is running inGLES3, it is even worse in GLES2, I can not even reach 50 fps. The thing is that, when the editor is lagging, my mac mini 2018 is running fine, not overheat, the fan is not even running. and the performance monitor shows CPU, memory are all in very low usage. That is why I found this issue very strange.

Once I ran the project, and it used to be fine. However, that time it was in slow fps with no reason. Took me a while to test and try all different things to made it back to 60 fps. Then I found out that after I zoomed in the scene to a close-up shot rather than an over shot in the editor, things returned to normal. At that point, I discovered the content in the editor window will impact the performance of the project and the Mac os. Not sure if that happens to other users or only my mac.

Hmm, I’m not sure then right off what would be causing the issue. Do you get any errors or information on the Godot console? Maybe it’s a bug or something causing the issue.

Besides the lagging, Godot behaves fine, as normal just slower on every thing. Now I grow into the habit not to leave heavy content display in the editor. This adds a bit inconvenience using the app but mostly ok, still, will be good I could find out the reason behind all this.