Little bit of nerdiness. I found that the DR400 setting in video results in more red and saturated image and less natural colors. Details in comments : r/fujifilm
Shooting only jpegs with DR400: Fujifilm X System / SLR Talk Forum: Digital Photography Review
DR400 v base -2: analysis: Fujifilm X System / SLR Talk Forum: Digital Photography Review
Do you use AutoDR or DR400?: Fujifilm X System / SLR Talk Forum: Digital Photography Review
Using X-Trans cameras with darktable | darktable
Fujifilm XT-3 Dynamic Range (DR) Settings explained and tested