20th July 2017, 0:19
Sounds like a driver issue. Maybe it is using the fallback gallium driver.
What you could try is installing the hwe xserver-xorg package which will bring in newer drivers.(see another thread on how to install this package in details)
What you could try is installing the hwe xserver-xorg package which will bring in newer drivers.(see another thread on how to install this package in details)