Looks like the tearing could be OpenVR only. It occurs in Beat Saber 1.29 but not in Pistol Whip, while Beat Saber 1.29 (using legacy beta branch) is not yet OpenXR, Pistol Whip is OpenXR. Needs more testing to narrow it down.
edit: it also happens in Pistol Whip.
Yet as written in the other thread (Latency in VR (with GSync) since 440.44 - #8 by Corben78), the headtrack delay seems gone in Monado with the U_PACING_COMP_PRESENT_TO_DISPLAY_OFFSET_MS=10setting.