Its like playing CS, quake, doom etc.... slowing down mouse speed helped although I wasn't feeling sick.

There is a mouse sensitivity in (i think) the inputs section found in "Options" but I haven't taken the time to really see what its doing.

HERP DERP, Whiskey.Tango.Foxtrot.

DFO KGB

Deadly Arshole, KGB Paladin, UO Pacific