ONE WORD: Turn off Efficiency mode
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@wholesum
thanks. worked. microsoft need a way for us to disable this feature on desktops. its not needed. -
Just dropping in to say that this really slowed down my browsing as well, on a Ryzen 5 2600. In retrospect I now know that it started back when it was introduced on W10 and was the main reason for upgrading to W11, because I thought my installation was just too old and full. But of course it was just as laggy with W11.... until I disabled this anti-feature. I was about to change browsers, seriously.
Might want to give new users a heads-up during install, or even give the option to permanently disable it without having to tinker with shortcuts.
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Now I need a solution for macOS. It's getting really annoying, always missing 2-3 keystrokes if I forget to wait.
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@Tuexss I am a Linux and Windows user.
I do not know for MacOS how to create a app short and edit its property.
The command for Vivaldi to start would be
open -a "Vivaldi" --args -disable-features=UseEcoQoSForBackgroundProcess -
I can confirm too, that this solved my issues mostly.
Especially after the last major released 6.5 and 6.6, the performance on some website was extremely bad; starting with Amazon.de, which also is mentioned in other threads here, and later GMail. Maybe because they are more or less complex pages, don't know.
However, I also do see the broken website »dead bird« page myself also as reported in other threads and this is still occurring; also started around the last two majors.
When I followed the instructions here, the corresponding »green leaf« icon was removed from the Vivaldi threads in Windows Task Manager and the performance was immediately better at least.
Why is such an option not reflected in the settings to turn it off when it can have such drastic drawbacks? I know that this is a Windows feature and maybe Microsoft is trying to »optimize« Chromium here for their own browser, don't know. But since we know what »experts« in optimization and performance they are, it would fit ...
Please make this an officially settings so no parameter is needed to switch it.
Thanks to @wholesum for bringing in the missing link here!
Vivaldi has by far enough issues even without this. -
@wholesum - I just want to say a big thank you to the OP.
I use a Creative USB DAC in W11, and each time I opened multiple tabs in Vivaldi, the audio from my music player (Plexamp) would start stuttering. So, I simply stopped using Plexamp.
In HWiNFO64, I could see that the E-Cores of my Intel CPU (an i5-12600K) were being pegged to 100% when this happened, with the P-Cores underutilized. A quick Google search led me to this thread, and after adding this flag to my Vivaldi shortcut, the stutters are gone - thanks.
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Good god, it worked.
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One more word: hoodwinked.
For the last few months, I've been wondering what's going on with rampant CPU monopolization for minutes when I open my usual tab groups that I've been doing in the same way for years.
It seemed to coincide with the Vivaldi that gave us Chromium 132, but I originally assumed that it was a Vivaldi problem. I don't think it is.
The "UseEcoQoSForBackgroundProcess" switch discussed in this thread is one that I've used for a long time, and I'd actually forgotten all about it until looking into this issue. Threads started popping up in various places (well beyond Vivaldi) this year saying that the switch no longer works. Sure enough, that's when I noticed a blizzard of green efficiency mode icons next to a good number of my Vivaldi.exe processes. Sigh.
There are a number of ways to disable efficiency mode, but I had Process Lasso so I created a rule to exclude vivaldi.exe from efficiency mode. And now I don't see the problem.
Perhaps Google deprecated the switch, I don't know, but I can't find any evidence of that. Maybe it's a bug in the switch. Maybe it only happens in certain versions of Windows 11 (I'm on Dev). In any case, keep an eye on it, since the switch may no longer work for you, too.
Further testing of the switch:
-Vivaldi Dev: doesn't work
-Chrome 135: doesn't work
-Edge: works! This is not suspicious at all. -
I can confirm that the switch is not working anymore. I have not had the same serious slowdowns like several month ago, but I was not aware of this and therefore did not tested it correctly – thanks for the report, I will investigate this further on my end.
Maybe it is time this is taken serious and why not giving users finally an option to disable this like other apps do? This is not a Vivaldi/Chromium thing but coming from the OS and you can see efficiency mode on many other task in the task manager.
Eventually this goes back to the fact that Microsoft is now also working on Chromium ... and if you have a look at Windows updates history for the last year (and forward from there) you know that the question is not anymore IF something is broken but only WHAT ...
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@linguaoccultus Yeah, as far as I've found, and unlike their earlier "power throttling" feature, MS doesn't offer a way to disable it globally, though I'm not convinced yet that that's warranted beyond browsers.
For now, I'm happy with Process Lasso, which is very low-resource, perfect for this task, and kind of nice to have around in general for everything that it does/shows.
