3 ms·Firefox does do that.by cimmanom 9y agoFirefox does do that.dawnerd 9y agoHmmm haven't noticed it but I don't use it too much, just for testing. Might have to switch for a while to see if I like it.Nursie 9y agoAFAICT firefox does that when it starts causing problems for the page, and causing unresponsiveness, but not just for processor spikes.