virtual display changed its resolution on its own. can it be locked?

[geetee24]

virtual display changed its resolution on its own. can it be locked to a specific resolution so that it CANT change?

[waydabber]

Yes, you can use the Configuration Protection/Resolution feature for that in the app menu under the Virtual Screen. But generally screens remember their resolution for a specific layout in macOS so if you add/remove a display, a new layout is loaded either with the default resolution or the last remembered one.

You can also specify which resolutions are available for a virtual screen (create custom resolution list).

[geetee24]

I changed nothing and had only my 1 custom resoution set - yet the app changed it on its own to a super high resolution that was not listed.

[waydabber]

I see. Some high resolution modes are created by necessity for HiDPI to work. You can turn HiDPI off for the virtual screen or use config protection.