There appears to be a performance issue
when accessing https://www.netflix.com/browse
when AdBlock Plus is installed and the about:addons shows AdBlock Plus as enabled.System
Windows 7 Home Premium SP1 (64-bit)
AMD A6-3620 APU with Radeon(tm) HD Graphics 2.20 GHz
RAM: 8 GBBrowser
Firefox 53.0.3 (64-bit)
multi-processing is enabled.
Extensions: AdBlock Plus 2.8.2
Adblock Plus subscriptions:
- Adblock Warning Removal List
[x] Allow some non-intrusive advertisingTo reproduce
Start with a brand new profile. Dismiss the page about logging on to Mozilla.
In about:addons, add an add-on called "AdBlock Plus". Verify that lists "AdBlock Warning Removal List" and "EasyList" are present in the Filter Preferences.
Navigate to any simple page, such as www.hotboots.com
. No issues.
Navigate to https://www.netflix.com
and logon as needed (will be needed the first time for a new profile). When redirected to https://www.netflix.com/browse
the page will freeze, the CPU will hit 25% or slightly more (equivalent of saturating a core of this 4-core CPU), and will stay there between 32 and 53 seconds. Then the page will become responsive. Do a page refresh, and the page will be frozen for another 32 to 53 seconds.
If I open another tab, and key in about:performance, the performance page shows that when https://www.netflix.com/browse
refreshes that the Adblock Plus is using 61% of the CPU and the about:performance tab is using 20%. (which is odd; 61% + 20% = the 35% that Windows Task Manager is showing me?) Then after whatever it is that is grabbing the CPU cycles and the page has finished refreshing, Adblock Plus settles down to 1% of the CPU.
This is a typical report after one such session:https://reports.adblockplus.org/b24eab9 ... 6231844be4
If I click on the AdBlock Plus icon and disable on netflix.com, then navigate to https://www.netflix.com
I still get the CPU load for about the same amount of time. This is a typical report with AdBlock Plus configured to be disabled on netflix.com:https://reports.adblockplus.org/b046166 ... f02477afd3
For what it's worth, when using Chrome 58.0.3029.110 (64-bit) with AdBlock Plus the CPU is pegged a bit north of 25% for only about 5 seconds, and the Chrome Task Manager shows AdBlock Plus peaking at 2.7% (when AdBlock Plus is set to "disable on netflix.com") and the tab for Netflix peaking at about 32%. These numbers are probably reasonable, considering the amount of junk https://www.netflix.com/browse
drags in to produce all those customized suggestions.