Closed Bug 975912 Opened 8 years ago Closed 7 years ago

Very annoying scrolling lag with Balanced power plan under Windows 8.1

Categories

(Firefox :: Untriaged, defect)

27 Branch
x86_64
Windows 8.1
defect
Not set
normal

Tracking

()

RESOLVED INCOMPLETE

People

(Reporter: tomboudiboudi, Unassigned, NeedInfo)

Details

User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:27.0) Gecko/20100101 Firefox/27.0 (Beta/Release)
Build ID: 20140212131424

Steps to reproduce:

Nothing but browsing any kind of website.


Actual results:

I've been experienced an issue on my new Dell XPS laptop: in Firefox, on every website, It became very laggy when I scroll through a page and when I use "Balanced" Windows's power plan. Is there a fix?

I don't think that my hardware is the issue:

Dell XPS 15 Platinum (9530) with Windows 8.1, i7-4702HQ at 2,2/3,2 GHz, 16 GB Ram, Nvidia 750M GT (2GB DDR5) and 512Go Samsung SSD.



Expected results:

Having a really smooth scrolling - smooth scrolling you can have on a Mac - , with no sluggish shake.
Summary: Very annoying scrolling lag → Very annoying scrolling lag with Balanced power plan under Windows 8.1
After careful consideration of your issue i would like to make the suggestion that with some company's power plans they can change how fast the processor operates to try and reduce the power intake your computer requires to operate. Because of this feature it is very possible that it is the feature itself and not your computer or firefox and if the issue does not happen if your computer power plan is at "optimal" then that is more evidence that it is the feature itself.
I had the same issue with a Dell XPS-15.

I was seeing, that with balanced power plan, the CPU was usually idling at 0.7GHz, when trying to scroll, there was just not enough power and the clock just increased slowly.

You can try to change the advanced settings for balanced power plan and adjust "Minimum CPU power" according to your needs. Bumping it from 5% to 50% with the CPU now idling at 1.17-1.24 GHz did the trick for me and scrolling is smooth on battery. Open the Task Manager (Performance tab) and monitor "CPU" - you should figure out your minimum optimal.

This will have an impact on your battery life, thusly I recommend to figure out your priorities here. If that solved your problem, consider marking the bug invalid

tl;dr: your CPU is not fast enough in balanced power plan. increase speed. godspeed!
Flags: needinfo?(tomboudiboudi)
Maybe your CPU temperature is too high so that the system had to reduce it?

Use a software (such as AIDA64) to check your hardware sensor temperature.
(In reply to YF (Yang) from comment #3)
> Maybe your CPU temperature is too high so that the system had to reduce it?
> 
> Use a software (such as AIDA64) to check your hardware sensor temperature.

I suppose you didn't read the last message properly.

The issue is not with overheating but the CPU being clocked too low for power saving reasons. So this is nothing Mozilla can fix but merely a configuring issue with the requester's computer. To be more specific: The CPU govenor does not increase the clock as quickly as it is needed for a smooth experience, this has nothing to do with the available (due to temperature/cooling) max speed. Changing the min frequency so it would always run fast enough to allow flawless scrolling from the second you scroll on your touchpad is the only way.
My CPU Is the weakest point of my computer. (Celeron CPU G465 @ 1,9GHz 4Go RAM. Graphic processor: NVIDIA GeForce GT 630) I didn't noticed anything on Windows 8.1. I even tested it on Firefox 27, which was release of the day bug was reported. No bug.
Closed as incomplete because the reporter didn't answer to comment #2.
Status: UNCONFIRMED → RESOLVED
Closed: 7 years ago
Resolution: --- → INCOMPLETE
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