I have created housie game page, but it is loading slow

I have created housie game page, but it is loading slow. Can some one suggest is it coding issue or network issue.
If i run code locally on my pc, it runs fast, but once uploaded on site winmilestone com, it becomes slow.
page winmilestone com / housie
Host server is in usa location, does the site becomes slow if accessed from different countries.
for example, if I click/mark number in housie game, it takes time to refresh but when i test it in my local server, housie game is fast.
how can i test my website speed access across different countries, to check if site is fast in usa and slow in other countries.