Chrome Version: 58.0.3029.28
OS: Android N
Device: Pixel, Pixel XL
VR Services: 1.3.149854881

What steps will reproduce the problem?
With Daydream set as default headset,
(1) go to https://sketchfab.com/sketchfab/collections/sketchfab-vr-showcase-mobile 
(2) Scroll down to the "Mars One" Mission Base and select it.
(3) Press the VR button and follow DON flow to view presentation

What is the expected result? similar results to M57. (pretty good VR experience. Head movement is smooth, etc.

What happens instead? M58 is noticeably worse. When you move your head, the content moves too, taking a a sec to catch up and reposition itself. 

Note there might be a general Chrome regression here. I just logged 703378 which similarly doesn't repro on earlier Chrome versions.