[Freeswitch-users] Voice quality Freeswitch on Centos on VMware EXSi

Dear All, I have installed Freesiwtch on CentOS 5.4 on VMware EXSi. Everything works fine but I keep having voice quality issues 1. Conference call will have gradually built up delay . Up to 10s of seconds for a conference call running for like 10 mins 2. Google talk have very choppy voice quality even I am using G711. I have extrated the RTPs in wireshark (less that 1 % packet lost) and play it using media player, the media is also choppy. For guest OS clock issue. I have already set clocksource=pit in linux boot option and NTP in linux but seems the problem still persist. Is there any suggestion that I can get the problem solved ? Or I have to run FS in real machine instead of visualization? Thanks a lot for your help