Will starting too much PSAPPSRV process, slow PIA's performance?

Hi,

I would want to have some advice in managing the performance of PIA in my environment.

We have 2 physical Solaris server.

Each server I've created 3 Domains of application server & 1 domain of process scheduler.

Each domain have Min & Max Jolt listener 25 with 40 clients per listener

Each domain have 8 PSAPPSRV process, 3 PSQRYSRV process & 1 each PUB& SUB process.

We notice that when we have a lot of users using the system they're complaining about slowness in login in & also exploring from page to page.

I check the queue status in all 6 domains and found only 2 domains where the queue in PSAPPSRV is moving (meaning there will be a few queue but will be cleared) while the remaining 4 domains the queue of PSAPPSRV remains 0 all the time.