I have an iMac 27” 2014, and a MacBook Pro. I installed macOS Monterey on my iMac via OCLP. And I want to use my iMac as a second display for my MBP. I tried to connect my MBP to my iMac with AirPlay via Wi-Fi, but the resolution is limited to 1080p. And it looks bad on the 27” screen.
I...