Re: MPLABX is unusable on 4k / HI RES displays (and the forum is a pain to post in)
OK, progress report...
The easiest way to demonstrate the problem is to launch MCC from within MPLAB X. If the problem is present, MPLAB X, formerly normal-sized, will become tiny.
If I modify the .conf file as described by rjc101, I get consistent sizing, but the type is consistently too small, and parts of it, such as the compiler output, apparently can't be adjusted by the user. My 4K screen is 27 inches wide. That setting might work well on an appreciably larger one.
If I do the Windows setting described in my posting, or the equivalent "for all users" setting, everything looks good, and of course it has no effect on displays that are not high-DPI. This could be done by the installer via registry setting. I will take Mark Pappin's suggestion and open a support ticket and suggest that Microchip address this using the information in this thread. Thanks.