Full screen video not filling out whole canvas

This used to not be an issue but suddenly it is. I didn’t change any settings.

Even though I select Full Screen when recording my screen or use custom and select the entire screen manually, it doesn’t fill out the whole canvas:

Hi,

That is a known issue when working work multiple displays which have different DPI settings or using custom scaling (not 100%, 125%, 150%, 175%, 200%…). Please set the same DPI value for all displays and use the preset scales to resolve the issue.
If it is not your case, please let us know.

Regards,

Hi. Where do I set the DPI value exactly?

Hi,

Please take a look at this https://www.windowscentral.com/how-set-custom-display-scaling-setting-windows-10

Regards,