vsync doesn't work with nvidia binary drivers when running multiple monitors

[Tessa]

I gather this has been an issue for a long time, but I'm just running into it now. basically, the nvidia binary drivers, no matter the version, don't seem to properly handle vsync if you have 2 displays. no combination of options seems to fix this so that it works correctly, there's just always massive tearing in games and videos.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: nvidia-driver-440 440.100-0ubuntu0.20.04.1
ProcVersionSignature: Ubuntu 5.4.0-47.51-lowlatency 5.4.55
Uname: Linux 5.4.0-47-lowlatency x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Sep 17 17:41:11 2020
InstallationDate: Installed on 2020-07-15 (64 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: nvidia-graphics-drivers-440
UpgradeStatus: No upgrade log present (probably fresh install)