I have also 100%, What ever theme I use mouse is bugged till I turn on trails on it.

Seems enabling pointer trails fixed this problem, but well... System trails looks so lagy..

exactly I have only 180days for two pcs

I downloaded it from here: Windows 10 Enterprise Insider Preview | TechNet Evaluation Center
It was 10074 version if I remember right, and updated all the time with new builds.
I have 10240 build...

I got till 2016/01/18 on two computers.. How to get permanent ?

Hey all, I got a bug with windows mouse cursor at 10240 build.
The mouse is way bigger and isn't accurate as it should be..
Trying to change cursor icon from Control Panel>Mouse doesn't helps....