IMac Retina 5K Late 2015 — why the mouse stutters?

At first it seemed that the graphics are not exports - the mouse hardly drags the window across the table with jerks like a cheap wireless with 300dpi. But connecting cheap Dexp wired, I realized that the graphics performance is excellent, the thing is heavy Magic mouse Apple Keyboard that came with the aimag. Whether one is or is it faulty? Made the rug has not helped. It seems that the BT channel is not over.
August 23rd 19 at 10:31
1 answer
August 23rd 19 at 10:33
This is due to the fact that the mouse of Apple has about 300 dpi, and at 5K Monica is very small.

Will buy another with no less than 2000 dpi.

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