PMM Query Analytics performace

I’m running PMM 1.16 on a docker container, on a quite strong server (i7-6700 Quad-Core, SSD, 64GB DDR4), limiting container memory to 6GB.

While running Query Analytics (to db servers that are in the same datacenter) I struggle to get more data than up to ~900 queries - amounts above this hits the timeout for a request (which is set to 60s).

I know I can increase the timeout value to get more queries, but I’m wondering if that is a expected performance?