Thanks @PhilipsIvo but that only works temporarily and then the phone decides that it knows better and goes back to auto.
Couldn’t post this last night because the forum seemed to go down for a bit, but I was getting the vertical colour alignment thing from HDMI input too. My ppm HDMI is plugged into an AV receiver so I tried some different inputs. What seemed to be ok, but this needs more testing, is a black screen with a small amount of bright areas, but if the ppm switched to displaying a bright image I’d get the vertical colour fuzziness “ping” in as soon as the image appeared.
This is clearly different to what was going on the other day when I took the photos. Last night I couldn’t get a correctly aligned image using any source unless the image was really dark.
It’s hard to describe, but the distortion was changing really quickly as soon the image was switched. It started off (I think, this was happening within a split second) with the colours not aligned vertically, then seemed to try and pull them into alignment, and then they’d drift back out of alignment again. But that all took less than a second. While that was happening I could hear a faint noise coming from the ppm direction that matched what I was seeing on the screen, kinda like resonance or something. But that might have been the PSU if the current draw was changing - it’s not totally silent.
I would like to reiterate though that this is not currently a serious problem for me, but it’s interesting that it’s happening. My only concern is that it’ll degrade over time but as @PhilipsEngineering mentioned it’s not so noticeable when you have a moving image on the screen. If I use the projector for any static text though then it becomes more obvious because it looks a bit like the focus is out, even though it isn’t.