Describe the bug
A clear and concise description of what the bug is.

The dashboard always renders at the low setting. Upping the setting to medium doesn't do anything and neither does setting it to high but the latter is also broken on Windows.

To Reproduce
Steps to reproduce the behavior:

1. Open overlay
2. Notice low resolution
3. Up overlay quality setting
4. See nothing change

Expected behavior
A clear and concise description of what you expected to happen.

The overlay should default to medium quality, medium quality should have a higher resolution than low and the high quality should have even higher res than that.

System Information (please complete the following information):

• Distribution: NixOS 21.05.git.8d8c1d366ba (Atemu/Nixpkgs@8d8c1d366ba4014dce09e2ee73363d332a9769e5 Atemu/nixos-config@84878bc7227fb64e82a078eae2f7265f9f8124bb)
• SteamVR version: 1.16.8
• Steam client version: 2021-02-12
• Opted into Steam client beta?: No
• Graphics driver version: Mesa 20.3.4 (ACO)
• Gist for SteamVR System Information: https://gist.github.com/Atemu/2bd9c07238f5c169d255401f96cafcdc

Screenshots
If applicable, add screenshots to help explain your problem.

Additional context
Add any other context about the problem here.

Note: Commenters who are also experiencing this issue are encouraged to include the "System Information" section in their replies.