May not be the best advice as i font have a 4k to see if it is relevent, but here goes.
Under preferences, i thinkniys the first page, has a "large icons" button. Is that selected?
You might look atthe bobcadv28.exe properties, compatability tab. See if anything there can help.
You can look at settimg display scaling in windows to make things larger, but keep your 4k crispy... but this will be a balance, as you dont want "windows" to appear comical...