I'm playing around with js-ipfs in the browser and made a example on how to send/receive data based on hashes that you can see the source to here and see working in the browser over here.

However, it seems Chrome is a lot slower than Firefox. I'm waiting until I can see that the peers are connected before trying to load.

• Chrome -> Chrome, same tab = Time to load: 21 milliseconds (expected)
• Chrome -> Chrome, separate tabs = Time to load: 28.936 seconds (unexpected)
• Firefox -> Firefox, same tab = Time to load: 43 milliseconds (expected)
• Firefox -> Firefox, different tab = Time to load: 546 milliseconds (expected)
• Firefox -> Chrome = Time to load: 382 milliseconds (expected)
• Chrome -> Firefox = Time to load: 369 milliseconds (expected)

So what I can see, the performance issue only happens when it's between Chrome and Chrome.

Versions
OS: Ubuntu 16.04.1 LTS
Chrome: 54.0.2840.100
Firefox: 49.0.2