[quote=Freqdoc]
The first issue is that rotating the camera with middle mouse causes the camera to spasm. Every other camera function works fine - and I can rotate the camera in-game just fine as well, this problem only applies to the editor. Originally this wasn't a problem when I started using the editor, but the camera broke just a few days ago.
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I'm having the exact same issue and I'm pretty sure it's not exclusive to your James Donkey 007 mouse - I'm using a Corsair Scimitar. I tinkered with the preferences to no avail, although mouse sensitivity does seem to affect it, it didn't change the fact that it jitters intensely. I can't get anything done like this. ):