I've experienced same issue. Kept my machine running overnight with open gnome-shells.
On the morning GPU-Util was about 95% and memory usage ~500 mb for each tab Cold start: +-----------------------------------------------------------------------------+ | Processes: GPU Memory | | GPU PID Type Process name Usage | |=============================================================================| | 0 1422 G /usr/lib/xorg/Xorg 73MiB | | 0 1640 G /usr/bin/gnome-shell 118MiB | | 0 4194 G /usr/lib/xorg/Xorg 379MiB | | 0 4326 G /usr/bin/gnome-shell 257MiB | System: Distributor ID: Ubuntu Description: Ubuntu 18.04.3 LTS Release: 18.04 Codename: bionic 5.0.0-31-generic x86_64 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1823544 Title: Unreasonable NVIDIA GPU VRAM usage on gnome-shell To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1823544/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs