hi, thanks for your reply. i am the developer, i just build this on my free time and put it online to see if its of any use to people.
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?
One of forum member recommended cryptochartsmonitor for me. UI is quite decent to view charts in binance simultaneously. But there is obstacle, especially on price movements. There is a delay (in milliseconds) that occurs between binace and cryptochartsmonitor. Hopefully one of the cryptochartsmonitor team will read my comments.