Hi @Nemecsek , I have the same problem.
Maybe I was naive in what Streamlit is, but I am worried that Sreamlit is more limited that I first assumed - it doesn’t seem to be able to gracefully handle even quite simple backend logical flow. Their demo gallery contains trivial examples of sites - where have all the sophisticated demos gone? Like that astro imaging one?
In any case, I seem to be butting against the tech limitations of Streamlit and am terrified this is a rewrite in something like Dash or even full JS. Neither of which I have experience of 
Anyway, I’d be interested to know if you come across optimisations that have helped you 