MRQ quality dropping over rendering of video

I got 2 related problems with Unreal 5.3

Problem 1 is that when I render a sequence of images (let’s say 720 images) the quality is worst than if I render a single frame of the same sequence. As far as I can tell, the textures get compressed, and maybe the mesh too, not sure. In my attachment, you can see between “frame1 still” and “frame1 anim” that object, like the tree (or parts of it, I use UDIMS) and dirt are blurry on “frame1 anim”.

Problem 2 is that this quality drop get’s worst over the later frames. I compare the first frame (“frame1 anim”) and last frame (“frame719 anim”, where it loops back) and there is a serious quality drop.

I tried without avail :

  • typing r.Streaming.PoolSize 0
  • turning off Texture Streaming in Project Settings
  • closing apps on my computer and re-rendering
  • removing all assets in the scene except for the main mesh
  • bringing the model in another scene that i know worked well
  • reducing texture to 1k (they are at 2k) and it helps a bit but not completely

Disabling Game Overrides helps. I am trying to figure out more about it.

I used the same scene before (different character model tho) before and it worked fine (character was much less heavy tho).

I have no warning messages at all.

Please help

Attachments below (images are compressed, but you can see the quality difference anyway)

Frame1 Still

Frame1 Anim

Frame719 Anim