[Windows 10] OBS-VirtualCam: Black screen if you use different fps

If I use OBS-VirtualCam and set frames per second (fps) at 61 Jami only displays a black screen. No issues if I use OBS-VirtualCam (SAME settings) together with Element.

OBS-VirtualCam: If I set 10,25,48, 60 or even 80 fps there are no issues (Jami can show you the video of the virtual webcam (Audio and Video settings) ).

However - some framerates for example 61 fps (but also issues if the framerate of OBS-VirtualCam is set at 23,29.97 and 59,94 fps) don't work and Jami only shows a black screen.

If I use Element (https://element.io/ ) I never had any issues - SAME settings!