Hi @<1523708901155934208:profile|SubstantialBaldeagle49>
If you report on the same iteration with the same title/series you are essentially overwriting the data (as expected)
Regrading the plotly report size.
Two options:

• round down numbers (by default it will store all the digits, and usually after the forth it's quite useless, and it will drastically decrease the plot size)
• Use logger.report_scatter2d , it is more efficient and has a mechanism to subsample extremely large graphs.

@<1523701205467926528:profile|AgitatedDove14>
Hi, after rounding down numbers, the plot size decrease to 300Kb from 11M.This really works, thanks!

Thanks for your reply!