Possible fix for Parallels mouse sensitivity issuesĪfter wrestling with Parallels mouse sensitivity issues for years, I think I've finally figured out what the main problem is. I hope my troubleshooting means something to somebody! Once again, I walk up to the PC, and try on the mouse that's attached, and I get super fine precision. If I'm in the top (orthographic) view on a Mac either emulating Windows with UDK, or using Real VNC to remote to my PC laptop, if I move the smallest bit I can possibly move, it jumps like it's trying to snap to a 30-50 pixel grid. Not only is the motion fast, it also seems to be moving in increments of about 30-50 pixels (that kind of incrementing is probably the cause of the speed). I walked over to the same PC laptop, and tried the same dragging motion with the attached mouse, and the speed was normal. Here's another piece of the puzzle: when I tried using Real VNC on my Mac to remote in to my PC laptop, the same strange acceleration happens in UDK! That was very unexpected. I have no mouse speed issues using any other apps via Parallels (including other similar 3D software like Unity and 3DSMax), so it's not that the Mac is always sending fast mouse signals to Windows, but just that certain programs must be using a certain technique that doesn't work well that way. Still, I do find it odd how UDK is responding to the mouse. At it's slowest setting, it's still not quite as slow as UDK on a PC with no emulation, but thought I'd pass that along incase it helps someone else. I imagine that Windows has no say in mouse speed when you're on a Mac controlling a Windows environment (similar in a way to using a remote desktop app to control another computer's mouse and keyboard). It appears that while running Parallels, the Windows > Control Panel > Mouse > Pointer Options "Motion" speed settings have no effect at all, but setting the Mac > System Preferences > Mouse "Tracking Speed" to the slowest setting works pretty well. Left- and right-mouse-button dragging is uncontrollably fast. I am having the same mouse speed issues using the Unreal Dev Kit.
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