I've just put up TWO v0.10.0 up for download, Win and MacOS.
This release concludes the massive optimization of the timelines functionality.
When previously it did work well, even with tens of thousands of messages, the feature did start becoming unresponsive with hundreds of thousands of messages. Which, depending on the use case, may not be too uncommon.
I'm happy to say that now, after a lot of work, TWO can work efficiently even with a session comprising a million messages - or more, I stopped testing there.
Already version 0.9.25 contained some of these optimizations, but crucially it lacked the significant optimization in the GUI that now allows also editing / interacting with such large recordings.
Both recording, editing, and playback are vastly optimized. More can be done, but I leave that to a future release.
Next up, I am working on a bug-fixing release.
Meanwhile, please go ahead and download v0.10.0!