Flash often loads the entire Java virtual machine due to Live Connect technology (it is often completely redundant); Also greatly increases the memory usage of the opera. (How to disable: operawiki.info/FlashBlock ) Try "Delete personal data" if you think this is justified to increase performance (it really helps in most cases) If your optimizing tendencies reach a manic degree, disable JavaScript. (try pressing F12 and you will see a convenient menu where you can do a lot more) Enable "Accept all Cookies" (This will also affect your security, www.opera.com/support/tutorials/security/privacy ) (I personally do not know how this affects performance, but they write this on the official wiki) Disable FavIcons (Prefs "Advanced" Browsing "Page Icons) Disable UI special effects and use native skin (it consumes less resources) Keep the cache on a disk other than where the axis is set, sometimes defragment this disk You can unzip executable files (http://operawiki.info/PackedExecutables) If you have other programs other than the Opera program, set the priority of the Opera process in 'High' through the task manager
Material on operawiki.info/OperaPerformance (EN) and from a variety of forums. Tomorrow, read the sequel, if the comments are interesting notes on the topic - I will consider them, so write. Thank you for your attention, for now this is only general recommendations, there will be more in the continuation, I hope someone will find this useful.