animated gif consumes all CPU before being shown
FF 43.0.3 on Win7 x64 A long page downloads an animated GIF off screen. The page will scroll normally until the GIF needs to be shown. At that point the cursor goes into "wait", and the CPU maxes for that thread for 10-20 seconds per GIF. During this time Windows has marked the program as "not responsive". Eventually the GIF is shown and FF becomes responsive again.
Opaite Mbohovái (2)
Do you have nvidia's network access manager or forceware network manager software installed? Disable / remove it. https://support.mozilla.org/en-US/kb/connectivity-crashing-firefox-43-update
Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac=Options) key, and then starting Firefox. Is the problem still there?
You can try to disable hardware acceleration in Firefox.
- Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
You need to close and restart Firefox after toggling this setting.
You can check if there is an update for your graphics display driver and check for hardware acceleration related issues.