slow response on solaris terminal

Solaris terminal responding very slow .. we have recently put a T3 hardware in to production , the applications running are it are perfectly and no complaints from user ..but when i ssh to the server ... the terminal response is very very slow .. it takes 3 seconds to show the character i type .. top -u , prstat -u , /tmp all looks normal ...what else could be wrong

how about a network problem? high latency... maybe worth to check this out...

how you are connected with the server...with console or through network..

If you are connected by serial or iLom it will be extremly slow. Example: The other day I untared the NetBackup client to a T3 using the iLom console. After 30 minutes I had to stop it. Using the ssh the same tar file took only a few minutes.