There might be something wrong on mobile with v. 3+
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Guys,
I think there is something wrong with version 3+ when visiting the website on mobile devices (at least on iOS Safari).
I’ve upgraded to the latest version from version 2.9.9.2 a couple of days ago and tested it with the same settings as before (no CDN, no ESI, no Object Cache or any other fancy feature).
What happens is that, on mobile, pages take more time to load compared to using version 2.9.9.2 and sometimes pages actually freeze. It is very noticeable. Other times, the CSS files will not load on various pages.
I’ve studied the 3+ code in order to find out what might be wrong, but I simply can’t put my finger on any culprit. I get no errors when testing from my computer. On desktop everything seems fine (can’t notice any performance differences whatsoever), but only when I access the website from my personal smartphone (iOS 10.1.1) the above-mentioned issues do happen.
I’ve also tested various pages with Google’s Pagespeed and the Time To Interactive is > 5 seconds on mobile. Speed Index is also huge. For desktop, everything is fine.
Now, I just reinstalled version 2.9.9.2 back and tested it in order to make sure there wasn’t anything wrong with the hosting server (it’s a Litespeed web server) and I can assure you that mobile is super fast again, with no issues, exactly as it was before trying version 3.2.3.2. Google PageSpeed also gives really good results now for mobile. Therefore, it’s gotta have something to do with LS Cache 3+.
Since I cannot offer you any proper leads on these weird issues in order to debug it, I’ll start by asking if you may be aware of anything in version 3+ code that might not work properly with Safari (I’ve tested on iOS 10.1.1)? I haven’t tested it on Android yet.
Unfortunately, version 2.9.9.2 is overall lighter and, in my case, way better performance-wise than 3+ and thus I will stick to it until hopefully other users will notice this strange behaviour in 3+ and report it.
Nevertheless, can you please tell if the LiteSpeed IAPI central server will continue to be available for the image optimization? I’ve noticed that version 3+ uses QUIC.cloud API services which I think is somewhat a different thing.
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