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No idea if op refers to that. I don’t think so, but modern stack can be ineffective.

My work mbp M1 was having a delay writing text in external monitor

While all the rest, including vidéo, was display without delay.

I had to tweak some driver settings ( of the base , not my graphic card )

Did you happen to write down what you tweaked? I use an MBP M1 with an external 4K, and I've had a sneaking suspicion that my keyboard inputs are somewhat delayed. Just hasn't ever felt quite right....

You can use slow-mo mode on your phone camera to confirm your suspicion (or use an app[1]). Just record yourself pressing a button with your keyboard in front of the screen in slow motion.

[1] https://apps.apple.com/us/app/is-it-snappy/id1219667593?plat...

yeah It was silly, the displayLink drivers of the docking station had to get an update specifically for those models. In my case there was no mistake possible: there was a solid second between typing something and actually see the text on the screen. Unusable as is.

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