Have you tried converting your own Profile 7 rips? What media player are you using? Let me know in the comments (or on your favorite self-hosted forum).
If you have an FEL (Full Enhancement Layer) disc, you are discarding the 12-bit color reconstruction data. Practical Truth: No consumer TV panel (OLED, QLED, Mini-LED) is true 12-bit. All current TVs are 10-bit. Furthermore, no streaming device outputs 12-bit via HDMI 2.0/2.1 in consumer mode. You are losing zero perceivable detail . convert dolby vision profile 7 to profile 8
Profile 7 (often referred to as MEL or FEL) is designed for physical media, specifically Ultra HD Blu-ray discs. Have you tried converting your own Profile 7 rips