Editor's frame rate severely drops when Game tab is maximized since v. 2021.22f1

Unity Engine
1

Ever since version 2021.1.22f1 (up until 2021.1.24f1) each time I maximize the Game tab, Unity starts stuttering and the game’s frame rate gets very low. As soon as I make the Game tab return to its normal size, everything goes back to normal (no stuttering or frame rate drop). I even tested it with a brand new project. In versions 2021.1.21f1 or below this never happens.

Tested on a Mac Mini (Late 2012) running macOS Catalina 10.15.7. Does anyone else experience this problem? I couldn’t find any mention about it in Unity’s logs.

2

Try and check if some game object is selected in the scene. Some objects with custom editor options will impact performance.

or maybe is just a bug as you think it is

3

Does it work if you enable game view vsycn when maximized?

7557322--934639--upload_2021-10-8_9-17-44.png

Otherwise, making sure no selection is active can help. Also, maybe some code is not efficient more pixel you have on the screen?

4

Thanks but it’s not that since I’m testing with a brand new project which only has a simple 3D cube object which rotates in place (just a simple rotation script, no custom editor options).

5

Thanks but VSync doesn’t seem to have any effect on the stuttering. The entire Unity UI is barely useable because of this. I’m testing with a brand new project which only has a single spinning 3D cube.

This doesn’t happen in v.2021.1.21 or below. In fact, I’ve just downgraded the project I was testing on v. 2021.1.24 to v. 2021.1.21 and it runs smoothly.

6

Ok you should report a bug and state the version where it was fine and then when it was not so we can run a bisection on our end. Make sure you include your machine hardware specifications.

7

I’m happy to report the problem got fixed in 2021.2 :slight_smile: