Sidecar resolution too high to be useful

I'm having this exact same problem, except when I follow your steps, as soon as I stop mirroring (even when set on optimize for iPad Pro) it resets the resolution in the extended display back to the same problem. Any suggestions? I need it for doing artwork and this is getting really difficult to account for

Hi, you can change sidecar screen resolution in following steps:

1. Connect iPad as sidecar monitor (by default it connected as "Extended display")
2. Open System Settings -> Display, select your main or Built-in Display.
3. In "Use As" select "Mirror for iPad_name":

4. Set "Show all resolutions" to ON, select desired resolution:

5. Now in "Use as" you can select "Stop mirroring" and resolution for iPad would be saved for the future connections.

This is extremely non-user-friendly, such a setting should be available if you select iPad on Display settings. Also different resolutions for sidecar should be applicable. Having 1280x960 or 1440x1080 would be great. Hope Apple devs will implement it soon.

Checkout the solution here: Sidecard resolution FIXED - Apple Community

Additionally, if you use Setapp DisplayBuddy is working well for me: https://setapp.com/apps/displaybuddy

I don’t have an answer yet, but here to say I got my support ticket with this very issue escalated to engineering a couple hours after your post. Im having this same exact issue. Here’s to hoping there is an answer!!

Not working for me. But if I connect my MacBook to an external monitor (I have a DELL), then my iPad screen show full size!