When I want to select units stationed in city I hold Ctrl and click each one I need. What happens is that the mouse starts acting strangely. Normally I can easily select stuff I need but when I try to do this it becomes really hard to click precisely icons of units next to each other. Mouse starts behaving like it is skipping pixels or like it needs more movement to move a pixel. I got a Razor Abyssus with its drivers loaded.

I haven't had this behavior in any other game that I can remember or when using windows.

EDIT: I just checked it, it happens whenever I want to select units by Ctrl+click. It happens when I try to move the mouse a bit faster. Maybe some problem with mouse acceleration or high DPI mice?