Simple solution that seems to have for me in Windows 10 is the following:
- Make sure Touchsettings.gt is present in C:/Windows/INF
- Go in to Device manager
- Uninstall Goodix Touch HID and HID-compliant touch screen
- Refresh the screen and you should see Unknown Device
- Right Click and Update Device Driver using the Windows Default option (not the browse file option)
I hope this work for others as I know how frustrating it is to our beloved Teclast devices behaving.
Good Luck
D