No, sorry for the confusion if you missed it, @james — this is on my iPad running 7.5.4 (4425). I haven’t been able to update it yet.
I do believe these episodes are Profile 5(?):
From Media Info:
“Dolby Vision, Version 1., dvhe.05.06, BL+RPU”
And, @NC_Bullseye , yes, I tried all three settings to no effect (on Infuse 7.5.4).
My AppleTVs are stuck on Infuse 7.5.1 (4394) and play the files correctly.