4.1.4 drops down to 1 fps

[artyr]

I noticed paint.net being very sluggish after the latest release when just moving around the mouse, so I turned on my monitor’s fps counter and it showed massive fps drops.

Sometimes when I leave the cursor still it slowly decreases further until it’s at 1 fps.

Once I move it again fps get better, but it's pretty random overall.

 

A short video of the behavior, please excuse the Blair Witch Project-cinematography ;):

https://streamable.com/vc8t8

It actually drops to 1 fps as mentioned but I was nearing the 30 second limit for Imgur(which later turned out to fail at the upload), so I didn't capture it on video.

As you can see at the start, it only happens when paint.net is in focus.

If I open any other program in the foreground, I can mouse over anything I want in paint.net in the background and the fps will stay high.

 

System:

3770K

16GB RAM

1060 6GB(driver version 416.94)

Win10 Pro 1809(build 17763.134)

Edited November 14, 2018 by artyr

[Zagna]

This might help find out what's going here.

 

[artyr]

Done, sent Rick a PM.

[Rick Brewster]

While I take a look at the trace, are you by any chance using GSync?

 

If so, check to make sure that windowed mode is not enabled.

 

You'll want the control panel to look like this. "... for fullscreen mode" and not "... for windowed and full screen mode".

 

I've not yet seen GSync work well for windowed apps. Always causes trouble with some apps.

 

[Rick Brewster]

Yeah if i turn on GSync windowed mode, I get a sluggish cursor as well. Acer X34 @ 100Hz + TITAN X (Pascal).

 

GSync just doesn't work well when its windowed mode is enabled.

[Rick Brewster]

The performance trace doesn't show anything unusual -- Paint.NET is barely doing anything, in fact. 

[artyr]

Yeah, it's a G-Sync 1440p monitor and "windowed and full screen" was enabled.

Will try full screen only then and report it to Nvidia.

Edited November 15, 2018 by artyr