Mouse Freeze

When Cubase Pro 9 is open my mouse arrow freezes for half a second sometimes when I moving it around.
It even affects other applications when Cubase 9 is open, but not when Cubase 9 is closed.
I use the internal graphics on Intel i7-4770K, at 2560x1440, but there wasn’t this problem with Cubase 8.5

Solved it. When I changed USB port for the mouse the problem disappeared.