video freezing in multiple tabs - chrome

[jalmasi]

Only freezes in chrome (including edge), when I enter the space twice, e.g. open 2nd tab.
Multiple tabs work fine in mozilla.
One thing different is

HiFi state Connecting
Chrome74.js?d0d4:121 [Deprecation] Obsolete constraint named googCpuOveruseEncodeUsage is ignored. Please stop using it.
run @ Chrome74.js?d0d4:121
Chrome74.js?d0d4:121 [Deprecation] Obsolete constraint named googCpuUnderuseThreshold is ignored. Please stop using it.
run @ Chrome74.js?d0d4:121
Chrome74.js?d0d4:121 [Deprecation] Obsolete constraint named googCpuOveruseThreshold is ignored. Please stop using it.
run @ Chrome74.js?d0d4:121
media-streams.js?1121:105

that doesn't show up in mozilla.

3rd tab died with
Slide Show!
nightclub.js?7c98:1675 Uncaught TypeError: Cannot read property 'material' of null
at r.eval [as callback] (webpack-internal:///./src/lib/worlds/nightclub.js:2423)
at e.notifyObservers (babylon.js:16)
at t.render (babylon.js:16)
at loop (webpack-internal:///./src/lib/vrspace/vrspace-ui.js:3138)
at t._renderFrame (babylon.js:16)
at t._renderLoop (babylon.js:16)
nightclub.js?7c98:1673 Slide Show!

not just video but entire browser tab, only thing I was able to do is close it.
But only once, can't get this again.
That might indicate synchronization issues - that VideoAvatar has no mesh when the video is starting.
It doesn't explain why video of first user also gets stuck though.
Note that the first video continues once I close the second tab.