the charts open client-side, so the loading time depends on user's pc specs, internet connection, an sometimes times of the day
if the delay is just milliseconds maybe its not such a big problem?
My thanks to you to build this chart monitor. About delay. If trading in spot, yeap.. there is not such a big problem. But doing trading in binance futures, well yes, it will be such problem for me.
I have decent pc spec's and stable internet connection (>60 mbps). But its okay. Your site for sure will be very useful for spot market trader.