The performance was fairly normal all day yesterday (European office hours).
It is important to mention I am connected through the public internet. No VPN, no privileged connection or anything else.
Performance problems, regardless the web application in use, are often caused by the connectivity between the two end points. Internet Service Providers may need to switch to alternative routes while carrying out proactive maintenance or reactively tackling network problems.
Please execute two important tests and upload the results as images if the problem persists:
1. In the terminal window (Mac: Applications > Utilities > Terminal, MS-Windows: Start - cmd)
type the command (Mac) traceroute app.marketo.com or (MS-Windows) tracert app.marketo.com
2.
http://www.speedtest.net/