When connecting an Apple laptop to a monitor, there may be flickering and trailing effects. Why?

This may be due to instability in the output signal from some computer hosts or laptop graphics cards when text is in motion, causing flickering and trailing effects on the monitor. To determine if it's a graphics card issue, you can compare it with another monitor. If it's a graphics card issue, consider adjusting the graphics card settings, such as turning off HDR, to improve the phenomenon.

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