Events:state node crashing/slowing browser when being opened

Curious if anyone else is experiencing this or this is a local problem. Since a few days whenever I try and open an exciting events:state node the browser cannot handle it and it slowed down. The script running has such a heavy toll that it takes about a minute (and a ‘stop running script’ msg) before they open.

I’ve noticed this both on the latest versions of Firefox (Mac) and Safari.