External Monitor takes a long time to sync

Hey stealthfire0,

Here's an article that may help: Use an external display with your MacBook Pro. This article provides information about which adapters to use and set up properly.

Since macOS updates include security updates and fixes, we recommend making sure the Mac is up-to date by following the steps below or following the steps in this article: Update macOS on Mac.

1. From the Apple menu  in the corner of your screen:

• Choose System Settings. Then click General in the sidebar, and Software Update on the right.

•Or choose System Preferences. Then click Software Update.

2. If Software Update finds new software, click the Update Now or Upgrade Now button to install it.

3. Enter your administrator password, if asked. During installation, your Mac might restart, and you might see a progress bar or blank screen several times.

If Software Update says that your Mac is up to date, then no new software is currently available for your Mac model. Software Update shows only updates and upgrades that are compatible with your Mac.

If you still notice the delay, troubleshooting steps from this article may help: If your external display isn't detected or appears blurry when connected to your Mac.

Take care.