Sorry for not posting the pre.
Removed the ICC profile created and reset monitor to default.
Hi, you have large clipping at these luminance levels, use a pattern for contrast and adjust to not have any clipping levels before reference white (255).
Also by reducing peak output levels (the backlight) it will help on having less clipping and better gamma tracking, but with VCGT (it can do only RGB Balance and Gamma calibration), for color gamut errors you will need ICC, but ICC they will work only if you will use an application which are capable to read them, like PhotoShop for example.
If you want to watch at least your movies with correct colors, you can use a software player which support madVR as renderer, so later create a display profiling using LightSpace and export 3D LUT correction table which madVR will load when you will playback a movie from inside that software player (like MediaPlayerClassic for example or others available).
External LUT Box with HDMI Input-Output which can work for PC-Levels is not available, all LUT Boxes (like eeColor/Lumagen) are working for Video Levels (RGB-Video/YCbCr output of your source you have to use) 3D LUT tables.