Server 1 : Central node Server 2 : Rim node (failover candidate check)
When you connect to Server 1, hub, qmc, etc. are very fast. However, it takes more than 40 seconds to connect to Server 2.
I tried various settings, but I couldn't find the answer.
One thing I found was... I forced the Central node to end and the Central role moved on to Lim node. As Server 2 becomes Central, the connection becomes faster. Server 1 got very slow.
To help you investigate this, we will need to have access to logs from your Qlik Sense installation. Doing this kind of troubleshooting is not possible in the community.
I suggest that you create a case with Product Support so we can help you solve this issue. If you unsure on how to create a case see