Resizing Capture Source doesn't seem to work properly

[Monadelass]

Sadly I couldn't find much documentation/guides on YomiNinja, so sorry in advance if error lies with me.
The tool seems to work fine in full screen (or window based which doesn't make a huge difference), but I couldn't get it to work properly by resizing the frame.
First I couldn't resize it at all without the frame resetting every time I hit PrintScreen, until I spotted the option 'Overlay Automatic Adjustment'. Now the resized frame stays in place, but the captions are displaced by being at their same position relative to the frame (even after refreshing).
I also tried Tray Control, didn't really understand what it's supposed to do but it endlessly loads when hitting PrintScreen

My intention was to make the scanning area smaller, in hopes it removes putting captions on tabs and taskbar and possibly improve performance.

using Win10 with a single screen WQHD 27" setup with 150% high dpi scaling