After a bunch of optimization and TLC, we're at ~530 MB json trace files in ~8 seconds, plus with some collab with @philliptrudeau, I've also added support for a binary ingest format that loads around 10x faster than that.
Still needs some LOD love, but it's coming soon, I swear. :P @bvisness hopefully, I'll be at a point where your 1 GB trace files are totally viable, soon. More UI/UX work to go, but load times are now in the ballpark of tolerable, especially if you don't need JSON specifically.