Low framerate with Vibrant Visuals on Xbox Series S

Framerate is around 30 fps or with Vibrant Visuals on Xbox Series S with the following settings.
Deferred render distance: 16 chunks

FOV: 90

Clouds: low

Shadows: medium

Reflections: medium

Upscaling: TAAU

Volumetric fog: high
Bloom: 75%

Resolution: Automatic (though event setting it to 66%, which is 1440p, causes significant blur)

A way that could this be easily resolved is by making it so that the internal resolution matches the Xbox’s configuration, so for example if I have the Xbox set to 1080p the internal resolution is 1080p, without upscaling it to 1440p, since the people who play in 4K are a minority and downsampling is not that necessary.