Make app working on ultra hd computers

I have a ultra HD computer and some apps don't work well with this resolution (too small text, buttons, etc)

I tried to run them on a virtual machine but it has the same problem. I set the resolution of the VM like 1920 x 1080 or other, but in this case the VM is too small, and so the app.

Have you got any solution to make the app working well on my computer or with a VM ? I don't want to do it on another pc.

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