you could try setting your gpu
drivers to set the scaling instead of your display.
no idea what graphics you have as you didnt bother filling in your system specs!!!!!!!!!!!!!!!!!!!!!!!!!!!
but you want to goto your graphics card display settings and look for something like "adjust desktop size and position" what your looking for specifically is "scaling" options you need to select an option that lets your graphic card drivers control scaling.
for example mine has few options one of which is "use my displays built in scaling" and one which states "use Nvidia scaling" I would choose the Nvidia option.
dont choose the option "fixed aspect ratio" or any option like that.