Laggy OBS Tools Output when OBS isn't in focus

[fungiboletus]

Describe the bug
The spout output is laggy when OBS isn't in focus.

To Reproduce
Steps to reproduce the behavior:

1. Create a scene with dynamic content.
2. Start a spout receiver
3. Start the spout output from the tools menu, and observe the spout receiver display, it's fast and smooth
4. Focus another application, like the spout receiver and observe a laggy output

Expected behavior
No drops in frames should be expected.

About the Software:

• OBS Version 29.0.2
• OBS Spout 2 Source Plugin Version : 1.8

About Your Machine :

• OS: Windows 10 Home
• GPU: Nvidia RTX 2070
• NVidia Driver Version: 528.49
• RAM: 16GB
• Machine Type: laptop
• Battery Mode: plugged

Additional context

It may be related to #47

The filter output works perfectly fine.

Thanks for your work too, it's appreciated 🙂

[campbellwmorgan]

Hi @fungiboletus could you elaborate a bit more what you mean by dynamic content? I was unable to recreate this with a video playing with the media player.

[fungiboletus]

A video was enough to reproduce. It's just about having something that changes in OBS. What is the resolution you tried ? The lag was more obvious at 4K for me.

[campbellwmorgan]

Right - i will try. Have you tried this with other outputs like NDI? I would imagine you get a similar lag as windows may well be performing some optimisations on the GPU for things that aren't focussed.

[fungiboletus]

NDI is way too slow at high resolutions but the VirtualCam worked a bit better perhaps.

Also, the filter output works well even when OBS isn't focused.