Plotly Performance Issues Despite Caching

[edsaac]

@Matthias3

The plots involve timestamps on the x-axis.

It could be related to this:

Plotly chart performance with datetime x-axis

That is interesting. I do not have an answer for the reason why that happens, but I was able to replicate your findings so I thought it would be good to report. Indeed st.plotly_chart takes 10x longer to render a figure with datetimes. [image] Code I would guess that Streamlit makes a copy of the data contained in the plotly Figure, transforms the datetime data into strings (to make a valid JSON), add other custom bits to that JSON, and then passes that to plotly. ------- df_datetimes --…

Do you see performance improving in your case if you convert the x-axis timestamps to strings?