Two causes of ~1s navigation delay fixed:
1. glass.css Section 19 was extending the page-in animation from 0.20s
to 0.30s using spring easing. Reverted to 0.20s in / 0.12s out.
2. During transitions, dozens of backdrop-filter layers (widgets, cards,
inputs, toolbars) were composited simultaneously for both the outgoing
and incoming page, overloading mid-range Android GPUs.
Added html.navigating class: router.js sets it at transition start,
glass.css overrides all app-content backdrop-filters to none while
active, animationend removes it once the in-animation completes.
Ulas
5bd80b1333