Is Multi-Cam Timeline 4 cams max (four that you assign) or is it 4 cams at a time (which you can swipe between?)
The use case described in the video is something I do fairly often, so not a trivial feature, I’d say.
Because this depends on solid internet connectivity (to serve the stored cloud footage) versus solid WiFi connectivity (to serve live footage from cams to router) it’s probable the experience will be more stable than the 4-cam live view currently is.
If you have (over)killer WiFi coverage (mesh or otherwise) your 4-cam live view is probably just fine. I find if you have a signal-weak cam in an otherwise strong-signal group, it seems to degrade the stable connectivity of the whole quartet.