Problems with Opera, after 34.0.2036.25 update

Hi there,

I use Windows 8.1
Opera Portable is a portable app I use a lot, but I guess something went wrong with their latest update.
I save all open tabs from some websites in Speed Dial Folders, there are 41 folders at the moment.
On right click there are more options now, and "Open all" is now "Open all in new tabs".
Before it opened with some delay up to 40+ tabs.
Now it comes with a warning with 10 tabs, and after "OK" it just freezes.
There's no sudden increase in CPU or Memory use, it just freezes.

And something else.
I checked Task Manager/Processes, if Opera is in use with just Speed Dial open, Opera has 10 running processes.
There's one under Apps (Opera Internet Browser (32 bit)
Under Background processes there are 9 with just Speed Dial open, and with every tab opened there's one more.
Any ideas why?