5271ea6571
Use default temporal layers instead of the RealtimeTemporalLayers one. When using low fps, having a single stream with much higher bitrate than the lower simulcast stream causes poor rampup behavior. Tested manually. BUG=webrtc:4172 Review-Url: https://codereview.webrtc.org/2723983002 Cr-Commit-Position: refs/heads/master@{#16934}