So I'm trying to calibrate an LG OLED A1 by creating a 3D LUT (gamma 2.4, 709, 100 nits etc.) with i1 Display Pro and can't seem to get it done. Right now I'm using the free DisplayCAL since money reasons have kept me from trying ColourSpace yet. Since A1 does not have an internal 3D LUT capabilities, I'm trying to create the LUT with Resolve's own pattern generator, connected via Decklink Mini 4K. The computer is PC, the A1's black levels were set to limited. For colorimeter correction I used a generic one for LG OLED. White drift compensation was on.
However, after initial successful (I think so at least) calibration couple of months ago with DisplayCAL, I wasn't able to replicate those results even when using exactly the same workflow. Couple of yellow hues are way off base according to the verification, and the results just got worse and worse after every profiling. The highest deltaE was around 5. The amount of patches was small since I was only trying to test things out and get the devices warm. Something troubling I noticed was the fact that the measured luminance jumped around quite a lot between profiling attempts and was even affected by the size of the patch window. Small one = high white luminance and reverse.
Right now I'm not sure how to proceed. I tried to find every available power setting that could have an impact on the brightness, but they were very limited, and don't have any acces to the internal hidden menus. Could some version ColourSpace help me here?