[Freeswitch-users] Audio Issues - audio pause 1~2 sec

Hi All I am facing audio issues for a long time.It is getting worst. I was running a old version v1.4 and continuously see the audio pause 1~2 sec randomly. Inbound,Outbound or play music on hold from server to ip endpoints(Polycom, Cisco,Yealink). We try with different routers and happening again and again. I upgrade to a most recent version and even try with different servers. It is happening again. Audio pause 1~2 sec randomly. I noticed,may be wrong when endpoints(30+ at a time, re register) re register to switch this happening, kind of a lock. There are 200 extensions in this switch. Environment : HP DL360 G6 ,72 GB Memory, SAS 15K rpm disks. How to troubleshooting this issue.Any help is appreciated. Thanks Lloyd