improved plotting performance of large, "narrowly distributed" distributed data, such as a 1:1 scatter or a high resolution time series (i.e., little variation in either x or y dimension). The low performance seems to come from changes made in how hover events are handled in plotly in newer versions (2.x.x). See plotly/plotly.js#5790 (comment), which is still unresolved at 06 June, 2022. The fix uses the default hovermode = "closest", but sets hoverdistance = 200, which should ensure a better responsiveness in most cases. The increased hoverdistance called for a disabling of hover labels to prevent confusion. Note, the increased hoverdistance may cause some unintended consequences when clicking into plotting 'white space', as the click snaps to the closest point within 200 pixels.