What is your TV/Projector mfg and model?
Assuming you are using cpm’s version T4A:
Display Led (Std-DV) is for native Dolby Vision TV/Projectors.
Player Led (DV-LL) for TV/Projectors that only support LLDV (normally older Dolby Vision TV/Projector, e.g. Sony A1) or if you are using a HDFury-like device that spoofs the EDID.
Player Led (HDR) for all HDR TV/Projectors that do not support any type of Dolby Vision (Std-DV or DV-LL).
Only VS10 is normally for TV/Projectors that do not support Dolby Vision and HDR (older TV/Projectors that only support SDR).