WebXR showroom has to work across network conditions and devices, not just on a fast desktop. For loading strategy, test the first useful frame, interaction readiness, and fallback behavior separately.
For WebXR showroom, set a numeric budget before reducing detail. Test at the intended camera distance or device class, and keep the threshold where silhouette, shading, or interaction quality first becomes unacceptable.
Separate initial payload, deferred geometry, texture loading, and interaction readiness so one slow resource does not block the page. Apply this loading strategy guidance to the actual WebXR showroom delivery path.