I'm currently preparing large, untextured 3D environments for viewing in VR for a client, and I have noticed that there is a significant performance difference between Google Cardboard and Samsung Gear VR in Sketchfab.
Viewing Sketchfab models in VR through the standard Samsung Mobile and Google Chrome browsers is fine on Google Cardboard (smooth head navigation, easy FPS control, loss of small details but okay graphics-wise), however the client really wants the models to work on the Gear as well.
Currently, I'm using the Samsung Internet For Gear app through the Gear, navigating to the Sketchfab model page, and enabling VR there, and I am noticing a huge drop in quality. While there is a slight increase in resolution, the framerate is extremely choppy and the viewport moves so slowly that I can see large black edges every time I move my head. I used the same phone, same models, and same Wifi network in the exact same location while testing these, and I'm unsure exactly why the performance difference is so large between the two devices.
Any idea what's going on?