I have opened a .SLPK of some phogrammetry its a 3d mesh 8.86 GB , in ArcPro and it displays fine in a scene

I have published it as a hosted service to our enterprise portal which took some time but caching completed.

I have checked the layer in scene viewer and it does not appear.
If i open the servuce url in arcgis pro the image appears fro a split second then disapears

Please an ideas,
Thankyou