After installing a bunch of ‘extensions/plugins’ for Chrome, I found my Opera running super slow. It was loading pages very slowly compared to other browsers if I was using more then one window. The weird thing is, it was working fine just yesterday. After about half a day, I started to get pretty frustrated. If I was playing a Youtube video for example, nothing else would load until the video was finished playing. This was highly frustrating and I was about to do a reinstall very shortly. However, I found out there are config options with opera. Before you remove Opera or use another browser as your main browser due to plain frustration, give this a try. (This has been a common these past few weeks apparently too.)
1. Open a new TAB/WINDOW. Type in opera:config
2. Find the Performance dropdown box, near the bottom. Click it to have it display a bunch of new options.
3. Make sure the settings are as follows for standard performance:
Enable Pipeline - Checked4. Hit save. Restart browser. Done. With these settings you should be able to browse at optimal speed with Opera! A suggestion would be to set the Network Buffer to 64 or 128 if you have a slow (Non DSL/CABLE) connection. This is also a small performance boost over the default settings.
HTTP Error Strategy - 2
Max Connections Server - 16
Max Connections Total - 64
Network Buffer Size - 32
No Connection Keepalive - Unchecked
Non-Compliant Server 100 Continue - Unchecked
Reduce Max Persistent HTTP Connections - Unchecked
Synchronous DNS Lookup - Unchecked
The weird thing is, when I went to view these settings, Max connections total/Max connections server were set to 1. Basically this means something was tampering with Opera’s settings. I am not sure if it WAS the extensions that I was installing, but something was defiantly modifying the settings without my consent in the past day, and I can’t point any fingers becuase I simply do not know. However, it does seem like a ‘browser modification’ attempt to piss off the user. After changing these settings, Opera was happy again, and pages are blazing fast again.
So give these a try if recently you are having troubles with Opera pages loading slow. This should fix those speed issues!
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I mainly focus on Javascript/PHP/C++/.NET applications for everyday and work. I also am working on a remake of Stellar Frontier, an old 2D top down space battle game with a few fellow programmers. 
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You can test your max connection settings here. I havea 10Mbs/1Mbs connection and I’ve found these settings work best for me in Opera:
Max connections to a server: 16
Max total connections: 20
青ビキニ
HELLO ! I SEE CHROME USUALLY IN SIMPLE OPERATIONS AS JUST SURF IN THE BOOKMARKS SLOW DOWN FOR SOME SECONDS , STOP AND AFTER THAT LET ME PROCEED …. WHY IT SLOW DOWN FOR SOME SECONDS ? HAVE AS ESTENSIONS AD BLOCK – FLASH HTML5 FOR YOUTUBE – YOUTUBE FLASH VIDEO PLAYER – IDM – AD BLOCK. THANK YOU
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I would add three adds into the most useful:
1) Like everyone said an Ad Blocker, I like ABP only because it was the first one I’ve used and never run into any issue.
2) Disconnect, it will block any Analytics, Advertisement, or Social features within a webpage.
3) I would change Pocket for Google Keep. My logic behind it, is if people are using chrome, they probably are using a google account. Google Keep is a note keeping, tracking and filtering made by Google. It can be accessed via Web, Android or iPhone and with the extension all it takes is a click and it will add your page as a note into it.
I followed your instructions to the letter and have to report that there is no performance tab anywhere in opera! Even the opera search cannot find it.
Just thought youy should know.
1. Open a new TAB/WINDOW. Type in opera:config
2. Find the Performance dropdown box, near the bottom. Click it to have it display a bunch of new options.
Thank you!!!! I did not install Mercury Reader because I use Firefox but it has an add on simply titled “Reader” and it is fantastic. Your video motivated me to look it up.