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Lync 2013 Click-to-call add-in for IE causes slowdown or crash on big pages

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Hey People,

We have Lync 2010 rolled out to our whole firm (~500 seats) and a handful (<30) are running Lync 2013 (back-end is all 2013 and desktops are Win7 with IE9 [mostly x86, but a few x64, though IE is always x86]).

We've found a particular webpage (for one of our internal systems), that includes a very long list of <option> tags (~30,000), which leads to a page that's about 3meg in size.

Lync 2010 has no problem with this.

Lync 2013 however does.  Some desktops, usually x86, find that the page will stall/freeze once loaded.

While my PC (i7 3.4GHz, 8Gig RAM, x64) was initially able to load the page happily, I found after rapidly sliding the scrollbar on the field with 30K <options> up and down a few times, my browser ground to a halt (after setting the affinity of IE to one CPU, it appeared that the IE process was hogging about 70% of that CPU).  After a bit, it recovered briefly, but then freezes, then recovers, repeatedly, eventually locking the window up and I have to close it.

Less powerfull machines freeze earlier, with IE reporting that it must recover the page.

I know this is an unusually large page and I'm guessing the click-to-call add-in is having to work too hard to find/update all the possible phone numbers, but surely, once it's parsed the page, that should be it.  It shouldn't be trying over and over again.

Anyone else seeing this?

I was originally on (plug-in) v15.0.4603.0 and upgraded to v15.0.4653.0 which helped a little.

Yes, I've tested this by disabling all other IE add-ins and then toggling the Lync Click-to-Call add-in.

The strange thing is, a collegue with the same speck PC (and on v15.0.4653.0) doesn't have the problem.

Thanks
Craig


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