Issues with Personal Communication [PCOM]

I have a design to repeatedly iterate mainframe to get some information every 30 minutes. As this goes on for a while may be a day or 2, PCOM is getting too slow for a Open & Close of the application and most of the time PCSCM or PCSWS.exe [which are the two exe which run for the PCOM] gets hung and preventing further iteration. If any one have a better solution, please let me know.