Magic Mouse2 keep loosing connection which keyboard and Magic Trackpad work fine

Question

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

Answer 1

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