I am using a P775DM3-G under Windows 10.
First, I need to point an issue with the Obsidian utility. After update of another driver, the touchpad was not functioning anymore. So I bought a mouse, deinstalled the touchpad driver and let the system reinstall it after a reboot. However the version was "unindentified" in the utility so I launched the update. The download started then only the red spinning wheel remained and ran forever. So I had to force reboot.
Second, now I have this issue: the trackpad is identified as a precision trackpad but it seems that the multitouch is not functioning anymore. I can't scroll or pinch using two fingers even if the corresponding options are activated in Windows touchpad settings.
How do I solve this?