Go to the 'driver' tab and choose 'update driver' and then 'Browse my computer for driver software' then 'Let me pick from a list of device drivers on my computer'. Open the drop down for 'Imaging Devices' and then right click 'Logitech HD Pro Webcam C920' and choose 'Properties'. Long answer: Basically, go to the Start button and type in 'device manager' and choose it.
Short answer: Start > Device Manager > Imaging Devices > Logitech HD Pro Webcam C920 > (right click) Properties > Driver > Update Driver > Browse my computer for driver software > Let me pick from a list of device drivers on my computer > USB video device > Reboot! Flickering issue fixed FINALLY!! I just watched a YouTuber explain that my Logitech driver should not be used and to use the Microsoft one already installed on my computer.
