I would suggest to go through these post first
here are some docs.
But if your performance is linked to these huge qvw, many servers can't do nothing because you can't split 1 app on many servers
According QV is using RAM for application reading (about 4 x RAM footprint = 32 GB) plus about 1/10 (3 GB) for each user you will need a huge amount of RAM just for 1 app
May be you can split a big one into smaller ones
Yes We are proceeding with Qlik team, But in thier last visit what they suggested was below our knowledge level. i guess in india their tech team is not upto that level. they are just establishing here. anyways we are escalated the same to the concern. and again we will meet them again. before that i need a clear knowledge on this.