The 2019.3 editor has gone under scrutiny for its sluggish performances. I’m wondering if timeline is a product of that.
My experience with it is sluggish, it’s far less responsive than maya and given the speed of the unity editor it should be much much faster. Some times it is blazing fast.
Also I’m seeing that click drag on the time portion of the timeline sometimes registers the scrub and other times doesn’t. This happens when working on a track then clickscrub the timeline, it happens all the time when manipulating a camera and quick click drag in the timeline.