[macOS] AE preview color doesn't match export (MacBook screen issue & color shift during playback)

(Note: English is not my native language and I am using a translation tool to write this post, so I apologize in advance for any awkward phrasing!)

The Main Issue I’m trying to make my After Effects preview accurately match my rendered output (viewed in VLC/Safari), but I’m running into preview color mismatch issues on macOS.

Project & Color Settings

• Working Color Space: sRGB IEC61966-2.1

• Use Display Color Management: OFF

• Blend Colors Using 1.0 Gamma: OFF

Two Specific Problems We Are Facing

1. Preview oversaturated on MacBook built-in display (My setup)

• On my external monitor, the AE preview matches the exported video (VLC/Safari) perfectly.

• However, when I move AE to the MacBook Pro built-in screen (Display P3 / Liquid Retina XDR), the preview suddenly becomes much darker and overly saturated, breaking the match with the rendered output.

2. Preview color shifts ONLY during playback (Friend's setup)

• Using the exact same settings on an external monitor, the preview matches the export while paused.

• As soon as playback starts (RAM Preview / Spacebar), the colors instantly turn darker and saturated. Pausing brings it back to normal.

Troubleshooting Attempted (Both Setups)

• Restarted AE & Mac

• Purged Memory & Disk Cache

• Reset Preferences (Shift + Option + Cmd on launch)

Questions How can I get a reliable, predictable preview that matches the export across Mac displays? Is this caused by macOS ColorSync handling, or a GPU hardware acceleration bug during playback?

Any insights or workarounds would be greatly appreciated!