There can be many reasons why the lags occur.
The issue can be on your PC/browser/router/Internet provider/CDN/our server/etc.
To understand the reason of lag, we need some additional information. You can help us to investigate your case if you do the following:
1. Access Chrome -> More Tools -> Developer Tools - http://screencast.com/t/dXnNlwFTV8y6
2. Access Network tab http://screencast.com/t/rRKZ9T9bsG
3. Try to access the game
4. Do the right click on any line and tick Save as HAR with content http://screencast.com/t/gxsrje20g
5. Input the following command in cmd: tracert plarium.hs.llnwd.net Then make a screenshot of it.
6. Send this information to our Support Team: https://plariumsupport.zendesk.com/hc/en-us/requests/new
They will help you to understand the reason of your lags and will help you to fix them.