Having your sliders and knobs in Live 9 go berserk can be so frustrating. Fret not, here’s how you can fix it.
Go to the Ableton live folder (probably C:ProgramDataAbletonLive 9 IntroProgram) and right-click on Ableton Live 9 Intro.exe.
Go to the ‘Compatibility’ tab and click “Disable display scaling on high DPI settings”. Restart Live and you should be good to go.