I'm also facing the same problem. Opera Mini can not able to load any sub-reddit page only in Extreme mode.
Automatic/High mode works fine.

Same here

Rather than fixing existing problem the developers working on unnecessary new features ??
Still Opera Mini has tons of problems.
Poor video Streaming feature, Poor built-in media player, Problematic Automatic/High mode, Unresponsiveness, Crashes...
If I'm using Extreme mode & try to play any video from any website then Opera Mini's bulit in poor media player comes up and loading...loading....loading
Everytime it takes hell lot of time to play the following video. Whatever, if the video plays anyhow & if I need to rewind the video then sometimes it totally stops playing the video & sometimes takes lot more time to load & play. They don't fix any problem.
But they bring a unnecessary 'File Sharing' feature where I can't able to choose & select files by browsing SD Directory like a file manager. All that it has some pre defined Audio, Video, Documents section where to select files.

Sometimes & even on some website
javascript:skip works but not every website.
When the javascript is paused then all you need to do is to go to address bar of that following page type javascript:skip then enter. On some website it will resume the paused javascript.
I don't think there has any other way to resume it.

Another thing is that I can not able to sign in to Opera Forums via Extreme mode

Slow loading at startup is fixed in latest beta. Thanks for that.
But still facing slow loading problem at web video streaming in Extreme mode. If I play any video from any website then Opera Mini's default media player comes up & loading & loading forever. After some minutes it comes but if I rewind the video forward or backward then again the loading..loading..& loading. Fix this please.
And I've a feature request to add VPN mode in Opera Mini. Thanks

Is there has anyone to fix the longer startup problem ????
If Opera Mini has many speed dials (like more than 25 or so) then Opera Mini takes hell lot of times to start & sometimes it shows a dialogue "Opera Mini isn't responding. Would you like to 'Wait' or 'Close' ???
Ah, what a miserable problem. And I'm still facing it. But no fix at all.

F*** Opera Mini.
I've been reporting that there has a bug. Too much Longer Startup problem since Opera Mini 40 & version 43 passing by and this crappy problem still exists. WTF is going on??

Opera Mini always was a proxy browser.
It's intent to save data via opera proxy server. That's not the problem. The problem is that still there has many problems & bugs in Opera Mini. Though we continuously report it to Opera but Opera / Opera Developers seems careless about this. They don't give a damn. When a new version is released they create more problems with Opera Mini rather than fix any problem.

Opera is literally dead after it's sold out to poor China.