Crosshair dragging

I've set crosshair size at 100% and "always use crosshairs - pointer defaults to crosshairs" set.In V07 it was OK, in 8.0.8 build 8153 BETA(running on Windows XP Home)the crosshairs flash and arevisibly dragged behind as i move the cursor.In addition there are occasional pauses of up to half a second when entering commands.