I have put together a simple wireless serial console device for use with switches, routers, etc. It consists of an X-Stick USB device (coordinator AT) on my laptop and an XBee series 2 module (router AT) combined with an ICL3232 RS232 chip on the router end. Both running at 9600 bps. This is working but I get intermittent lag and slow response. I suspect interference. Any suggestions on how to troubleshoot?