[Observium] high CPU / slow response

Hi,

I'm running the latest version, but it is extremely slow.

Even to load the login-page, it takes a very long time.

I always see mysqld using almost all CPU-power.

the server is running in vmware, os = debian.

Currently I have one v-core assigned with 16G of ram. ( already tried with 4 cores.. )

In Observium I have 75 devices with a total of 7500 ports.

Please advice ;-)

Thank you,

Have a good day,

Paul