Makes Firefox slower for some pages

[kkot]

I noticed this addon slow down considerably Google Street View. When I was trying to look around it works very unsmoothly to the point it is unusable. Also switching between images is slower.

[gaby2300]

The same happened with Tab Center as a Test Pilot experiment.

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On 15 August 2017 at 15:00, Krzysztof Kot notifications@github.com wrote:

I noticed this addon slow down considerably Google Street View. When I was trying to look around it works very unsmoothly to the point it is unusable. Also switching between images is slower.

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[eoger]

I wonder if it's because of the thumbnails update code. Do you experience the same slowness if the compact mode is enabled? (no thumbnails)

[kkot]

When I turn on compact mode it works better. Thanks :) I thought it would not make difference because I have so many tabs that I don't see thumbnails but it does.

I see it for example in page below, without compact mode switching between images is slow (with left and right buttons): https://www.otodom.pl/oferta/dom-172-60-m-gdynia-ID3jqJG.html#gallery-open[3]

[eoger]

There's also the fact that we are not resizing the thumbnail firefox gives us, after a bunch of tabs loaded these binary blobs might add up, maybe we should resize them.

[eoger]

2 things we should do to get started:

• Use canvas to resize thumbnails.
• De-bounce the capture of thumbnails.

[eoger]

Let's see if https://github.com/eoger/tabcenter-redux/commit/a1f3ff2099195fd5efad0d6e4a282340ca04e2f7 helps

[eoger]

Feel free to re-open if Tab Center still causes performance issues.