Weird mouse movement, mouse cursor is moving up and down

fr3x

Honorable
Feb 24, 2013
2
0
10,510
Yesterday my mousecursor started moving up and down when I drag it vertically and left and right when I drag it horizontally. It started when I got my new computer monitor, I upgraded from a 60HZ to a 144HZ. This is the mouse I'm using: http://www.inet.se/files/img/max/6606234_4.png, a steelsteries sensei and this is the monitor I'm now using: http://benq.eu/product/monitor/xl2420z/specifications, a BenQ XL2420Z. I have checked the bottom of the mouse and can't find any dirt or anything and I haven't changed mousepad.