https://arewewaylandyet.com/ has links to the caveats at the bottom, though it doesn’t mention CosmicDE, which is also in pre-alpha rn so I’d recommend use something stabler rn, especially for your main computer

For KDE, they are:

• Make sure nvidia_drm.modeset is set to 1
• Night Color (yellow tint at night) is not applied to the mouse cursor: https://bugs.kde.org/show_bug.cgi?id=479889
  • This seems like a non-KDE and universal issue as I have it with AMD on Windows too
• Poor performance on external screens on hybrid GPU setups when using NVIDIA GPU as a secondary GPU because it requires CPU copying from the primary GPU to the secondary GPU (see https://invent.kde.org/plasma/kwin/-/merge_requests/1031, https://bugs.kde.org/show_bug.cgi?id=452219)