Comment by trycatch

Yes, I have the same problems. Last time I looked into these pauses, those were mostly GC pauses. At first you feel like moving on a bumpy road with micro-freezes and frame drops - that's incremental GC, and then you meet a concrete wall - that's non-incremental GC kicks-in, sometimes in multi-second territory. It got better in the last few releases, to be fair, but still far away from other browsers.