Bumping my own topic.
I'm going to contact my usual calibrator about this. I just saw on his website he does 4K/HDR calibration and has bought himself new calibration tools to do so. I just want to hear what he has to say about it first before I let him come over though.
Although I'm actually fine with my current settings, it still bothers me I haven't had my TV ISF calibrated yet like I usually do.