App is fast/responsive in my own computer but is extremely slow in shiny

I've created this app, that works quite fast when testing in my own computer, but loads very very very slow (to the point of not being usable) when uploading to (free version)

I'd like to know if there's a way to check if it's a matter of the free subscription and I should upgrade, or if it's something else. Thanks.

Is it pulling lots of data from somewhere? Could that be improved?

I had this same issue a while back when using leaflet. My maps worked fine locally but were causing problems when on the paid version of shinys apps. I resolved it in the way I suggest below.

Try hitting ctrl-shift-J in Chrome to see a console and check any warnings. When I tried this with your app I saw a few:

Error parsing expression: input.colectivo_ccaa_gen=='Total'

utils.js:176 Uncaught SyntaxError: Invalid or unexpected token
at new Function ()
at scopeExprToFunc (utils.js:176)
at ShinyApp.$updateConditionals (shinyapp.js:414)
at ShinyApp.sendInput (shinyapp.js:143)
at InputBatchSender.$sendNow