Ask Different Asked on February 24, 2021
I have a Magic Mouse 2, Magic Trackpad and Apple keyboard. From time to time, mainly when I have higher CPU usage, my mouse drops it’s connection. I have my trackpad next to it and it is still working fine, as is my keyboard.
I think I have narrowed it down to the amount of screen I have attached to my computer. At work I have a Dell 43" 4k screen and at home I have (2) 27, 1(34 wide) and (1) USB Screen. If I have all screens running then my mouse drops more frequently.
I have a 2018 Macbook Pro 15 with 16gb memory, i7, 4gb video memory
The problem was related to a cheaper dongle for HDMI. Once I removed the dongle my mouse problem disappeared.
It is related to this issue. I did not try wrapping the dongle in foil, but removing it completely solved my mouse dropping issue.
Macbook loses network connection when connecting external display
Correct answer by brentwpeterson on February 24, 2021
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