Hello so Premiere Pro won't let me color grade a HEVC file with 2100HLG, when I do, I go to export it (even with match source to HLG and HEVC setting) it still comes out overexposed or over saturated. So I go back and remove the color grading (just slight blue tint, contrast, and saturation), and then it exports correctly and doesn't take hours for a 18min video shot in 1920x1080.
I have gone in the color manegament settings in the Lumetri panel, and made sure color spaces match and all is aligned but it still does this.
I only have this problem with HDR videos it seems.