I'm posting as well to add to the number of people experiencing this issue.

Issue: Constant r0 every couple of minutes. Game freezes for a few seconds up to a couple of minutes but chat logs remain close to real-time.

Here is additional information:

1. – Operating system: Win7 64 bit
2. - Antivirus program: None
3. – Internet Service Provider: COX Cable
2) Exact Error Message: None, game freezes for a few seconds up to a couple of minutes and r0 is displayed in corner
4) What area were you in when the error occurred? All over the world, Ulda, Limsa, Broken water, Strongholds, Copperbell...
5) What were you doing when the error occurred? Standing still, crafting, XP party, nothing specific
6) Were you in a party at the time the error occurred? Happened outside and inside parties (0-8 players)
7) Estimate number of characters that were near you at time of error? 10-100, happens in cities and in remote locations
8) Were you able to log back into FFXIV after the error? Yes