1058588 - Responsive design view is very slow

Status: RESOLVED INCOMPLETE

(DevTools :: Responsive Design Mode, defect)

Description

[alex]

User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0 (Beta/Release)
Build ID: 20140716183446

Steps to reproduce:

Opened up a website and opened responsive design view. Dragged the viewport and it just lags behind the cursor a lot.


Actual results:

When dragging the viewport in responsive design view, it's very laggy and not smooth to show the transitions between breakpoints. It is so laggy at points that it takes 3-5 seconds to catch up to the cursor movement.


Expected results:

Resizing the viewport in responsive design mode should have been smooth and not lagging behind the cursor.

Comment 1

[:Gijs (he/him)]

What website are you testing with? I tested with "about:blank" and it's super-fast.

(please, always include details when you report bugs - in this case, some more details about your machine and how slow/fast it is in general might be useful, too)

Comment 2

[alex]

Im testing on posh.pandadevsite.com, my machine is a AMD Phenom II X4 955 quad core, 3.2ghz, 8gb of ram, geforce 8800 video card, windows 8.1 pro

Comment 3

[Loic]

I tested, it's laggy when resizing the viewport. Same lag with old FF17 or fresh FF34.

Comment 4

[alex]

is this a bug with firefox?

Comment 5

[Wayne Mery (:wsmwk)]

Website URL fails