Over the last few days I did some cleanup of the mouse code, mainly removing some magic scaling factors from the backend that were different between platform, with Windows raw mouse input being an extreme outlier from the others.
Don't worry, there's migration code in place that converts old configs to the new settings.
The main problem we are facing now is to set up a reasonable default for fresh configs but with the highly divergent defaults right now that's not easy without getting more information.
So, I would like to ask as many people as possible to do a quick test run with the most recent devbuild, preferably in a way that does not overwrite your old config.
What I'd like to know is the values you get after the transition for the vertical/horizontal sensitivity and for turn/mouselook speed, factoring all your customizations. If you feel that your defaults do not feel right, please play around with these values until you get something that works.
Please list this, along with your OS and the mouse you are using. From the 4 samples we got so far, no good default can be derived because they simply are far too different. Remember: The more info we get, the more likely it is to set up good defaults for newly created configs.