@dialex91 said in Opera portable is veryslow:
portable version is a SHIT
The portable version is the same exact version (same files and everything) as the regular version. It just uses different paths for the profile files. It's probably just not a fast enough drive for Opera (and other Chromium-based browsers).
Try opening up a private window, closing the regular window and just browsing in private mode for a bit. Is Opera any faster that way. If so, you can create a shortcut to launcher.exe on the drive with options that disable disk cache. That might then help things in regular mode.
You could also see if you can find a faster, USB 2.0/3.0/3.1 pen drive that supports faster read and write speeds. Of course, speeds will vary with speed of port you're plugged into at the time.