It's never a good idea to trade on a bad internet connection. Consider using a VPS.
That said, there could possibly be an issue with the Oanda plugin. Or with Zorro's http library (if that's what the plugin is using). It's too hard to tell based on this info. You could file a bug report with oP group and see if they could figure it out.
Thanks Andrew. Yes absolutely would use a broker colo vps for live trading.
If it becomes an ongoing issue I'll submit a report.
~eric
