Hope this resolve your issue. If the issue is solved please mark the answer with Accept as Solution & like it. If you want to go quickly, go alone. If you want to go far, go together.
Bottle necks are most often the used hardware-ressources and which data-architecture and data-models are implemented - and this is quite independent from qlikview.
Beside them, you need to ask more specific with a detailed description where you have performance-issues to get more then a general answer.
