Terminal: Poor graphics rendering performance in Windows when Terminal is the foreground/active app

[afefer]

Environment

Windows build number: 10.0.19041.388
Windows Terminal version (if applicable): 1.1.2021.0
CPU: Ryzen 9 9300X
GPU: GeForce 2080 Ti
Monitor settings: 3840x1600 @ 144 Hz w/ Nvidia G-Sync enabled

Steps to reproduce

1. Open Windows Terminal and ensure Terminal is the foreground (active selected) app.
2. Move mouse cursor OR shake Terminal to minimize all other apps on screen.

Expected behavior

General rendering performance in Windows should not be affected by Terminal.

Actual behavior

The mouse cursor appears slow/choppy when Terminal is in the foreground, and the problem immediately goes away when you click on another window to make Terminal no longer the foreground app. This problem not only affects the rendering of the mouse cursor, but other graphics as well (e.g. if you shake the Terminal window to auto-minimize all other open apps, the visual effects for the minimize action also appears sluggish).

Note this can also be repro'd when Terminal is minimized and the taskbar icon is clicked to restore the app - the visual effects for the restore action is sluggish.

[jack775544]

Almost certainly this issue https://github.com/microsoft/terminal/issues/649

Adding the setting "experimental.rendering.software": true is the recommended temporary workaround right now.

[afefer]

Yup, that looks like it. Thanks @jack775544 for the quick pointer to that bug. This can be closed as duplicate.

[DHowett]

/dup #649

[msftbot[bot]]

Hi! We've identified this issue as a duplicate of another one that already exists on this Issue Tracker. This specific instance is being closed in favor of tracking the concern over on the referenced thread. Thanks for your report!

[DHowett]

Thanks everyone!