Good to hear it. Wasn't aware that some of the mouse could alter there 'polling rate'.
BTW the Developers are super busy patching, they are an Indie game company (meaning very small, low budget and typically understaffed/overworked). With the issues they are having this particular one wouldn't be a high priority since its more of a performance bug and compatibility issue thats affecting less users than their other issues are (figuring out whats causing a bug, is typically the hardest part).
They'll fix that soon enough they got bigger more severe problems. I know they read the forums a lot and this particular problem is as I said easy to fix and often overlooked.