PS5 and Xbox Series X in Frame Rate Mode use a dynamic resolution with the highest resolution found being 3840x2160 and the lowest resolution found being 2688x1512.
Pixel counts at 3840x2160 are very rare on PS5 and Xbox Series X in Frame Rate Mode.
PS5 in Frame Rate Mode seems to have a resolution advantage over the Xbox Series X. As an example, during the opening scene of the game the PS5 renders at approximately 3093x1740 and the Xbox Series X renders at 2880x1620. However, there are scenes in the game where both PS5 and Xbox Series X render at a resolution of 2688x1512 such as scenes with a lot of vegetation on screen.
Xbox Series S in Frame Rate Mode uses a dynamic resolution with the highest resolution found being 2560x1440 and the lowest resolution found being 1792x1008. Pixel counts at 2560x1440 are very rare on Xbox Series S in Frame Rate Mode and pixel counts at 1792x1008 seem to be common on Xbox Series S in Frame Rate Mode.
The only resolution found on PS5 and Xbox Series X in Quality Mode was 3840x2160.
Xbox Series S in Quality Mode uses a dynamic resolution with the highest resolution found being 2560x1440 and the lowest resolution found being approximately 2304x1296. Pixel counts at 2560x1440 seem to be common on Xbox Series S in Quality Mode.
PS5 running the PS4 Pro version of the game renders at a resolution of 3200x1800 and appears to use a form of checkerboard rendering to reach this resolution.
All three consoles appear to dynamically change shadow quality in Prioritize Quality Mode. An example of this can be seen here on Xbox Series X https://youtu.be/akvmW0NIvKo Redced shadow quality was noticed more often on Xbox Series X than PS5
https://bit.ly/3pq39vF Shadow quality in both modes is also lower quality on Series S than the other two consoles.
Motion blur appears to dynamically turn on and off on all three consoles in Frame Rate Mode. An example of this can be seen here on PS5 https://youtu.be/uOMEFyuKZU4 Motion Blur seems to be disabled less often on PS5 than the Xbox Series consoles. In rare cases the motion blur can also turn off on Xbox Series S in Quality Mode.