Hello! I'm trying to figure out why I'm seeing such a big difference between running my calibration LUT in LightSpace and then when I load it in Resolve as a Video Monitor LUT.

The report from LS looks great, but when I run a profile after loading the LUT in Resolve, it goes crazy. I am running Resolve on a 2018 MBP with a Blackmagic Mini Monitor 4K going into an LG E7 OLED. I've attached the two profiles here. Any help would be great!

Attached file: Profiles from LS and Resolve

You have a signal range issue.
See: https://www.lightspace.lightillusion.com/error.html
Look at the 'Signal Range' section.

Steve

In case this is what you are trying, You can't check a resolve calibration LUT, using resolve as the generator, because the display LUT is after the colour generator. So how do you verify a resolve calibration LUT?

I think you mean the patch generator is AFTER the LUT, so cannot be used to verify the LUT within Resolve.
And yes, that is indeed correct - see: https://www.lightillusion.com/resolve_manual.html

Steve