Some windows draw slowly with nvidia-440 drivers

[Neil McPhail]

Fresh install of Ubuntu Mate 20.04 development release. Machine has a GTX650 and I opted to install the proprietary drivers at install time.

Some windows, such as the "Logout" window, draw very slowly. A frame and titlebar appears for a second before the window expands and draws content. I can't replicate this on my laptop which is using Intel drivers; the windrow drawing is instant there. See the attached GIF.

What should happen:
- Window should appear instantly

What actually happens:
- Window title and frame appears, waits a second then the window expands and content is drawn

There is no improvement if I switch off compositing in Mate Tweaks.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: marco 1.24.0-1
ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24
Uname: Linux 5.4.0-18-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu20
Architecture: amd64
CurrentDesktop: MATE
Date: Fri Mar 20 22:23:17 2020
InstallationDate: Installed on 2020-03-20 (0 days ago)
InstallationMedia: Ubuntu-MATE 20.04 LTS "Focal Fossa" - Alpha amd64 (20200320)
SourcePackage: marco
UpgradeStatus: No upgrade log present (probably fresh install)

[Martin Wimpress  (flexiondotorg)]

I can not reproduce this issue using Ubuntu MATE 22.04 daily and NVIDIA 510 drivers.

[Launchpad Janitor (janitor)]

[Expired for marco (Ubuntu) because there has been no activity for 60 days.]