Hi @Kumo-Kairo, thanks for your excellent work.
I noticed that this reference Post Process Mobile Performance : Alternatives To Graphics.Blit , OnRenderImage ? has mentioned something like “Don’t use OnRenderImage(), use OnPreRender() & OnPostRender() with custom targetTexture instead” in order to avoid CPU ReadPixel().
Have you tried that? Since it’s still OnRenderImage() in Sleek Postprocess.