How I Solved Chrome GPU Issue on My Linux Mint
I moved from Cinnamon to XFCE and saw Chrome GPU rendering problems with multiple windows and maximization.
The core issue came down to an X11 configuration mismatch. Creating a 20-intel.conf file helped:
Section "Device"
Identifier "card0"
Driver "intel"
Option "Backlight" "intel_backlight"
Option "AccelMethod" "sna"
Option "TearFree" "true"
Option "DRI" "3"
BusID "PCI:0:2:0"
EndSection
Place it under /usr/share/X11/xorg.conf.d/ and reboot.
GPU acceleration stabilized after this change.