Thought this was interesting. It looks like SteamVR chooses some weird default resolutions for ‘100%’ for the O+. Here’s a comparison:
Odyssey+ (1440x1600 per eye)
100% = 1426x1779
140% = 1687x2105
200% = 2017x2516
250% = 2255x2813
OG Odyssey (1440x1600 per eye)
100% = 1428x1776
140% = 1690x2101
200% = 2019x2512
250% = 2258x2808
Oculus Rift (1080x1200 per eye)
100% = 1344x1600
140% = 1590x1893
200% = 1901x2263
250% = 2125x2530
Vive-Pro (1440x1600 per eye) *
100% = 2016x2240
Vive (1080x1200 per eye) *
100% = 1512x1680
The general consensus from where I saw this on reddit here is that it seems best just to put SteamVR default video resolution to 140% at a minimum for the O+, and then under/over a percentage per game, depending on what sort of card you have and how efficient the game is.
Especially odd when you consider the Vive-Pro has the same native resolution as the O+, but look at what SteamVR sets as a default 100%. Weird.
I wonder how many new O+ users are cranking up an existing title, letting SteamVR do its defaults and actually seeing an undersampled resolution?