Hi,
Following on from the latest round of Windows updates last week, I found web browsing really laggy. After checking/changing/troubeshooting network configs to no avail, I decided to see if Sophos was the cause. Long story short, I have narrowed this down to the Web Protection Content Scanning setting - if I turn this off, everything works nicely, set it to "As on-access scanning" and I get issues on all browser (my primary ones are Chrome and Firefox latest versions).
An example of a web page that won't doesn't load properly:
With the content scanning on, the page appears to load, but clicking on the video simply displays a spinner. Turn conent scanning off, reload page, click play and the video plays.
Other pages simply don't complete loading, so either do not display, or the web browser continues trying to load the remaining components in the background (for what seems like forever). Another example:
- Go to www.bowers-wilkins.co.uk
- Hover over Headphones, and click on one of the models of headphone
- Page loads so you can see content, but Firefox sits there still trying to load something. Sometimes the page works okay, others you click on one of the links under the headphone picture (e.g. Engineering) and it doesn't work
- Turn off content scanning and everything works fine
And here's a site I can't get to display at all unless I turn off conent scanning (or keep stopping/reloading until I get some content):
From what I can tell from Firefox debug, the issue on that site is with image files (e.g. logo.png never loads).
Any ideas? And what are we risking turning off the content scanning option, albeit leaving the rest of Web control enabled?
Sophos version: 10.6.4.1150
Windows 10 version: 1607 build 14393.953
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