Kibana loading slowly after x-pack-security enabled

Kibana is extremly slow after x-pack-security enabled.

Loading multiple times of index.light.css and it took almost 3 seconds each time.

Chrome network:

Elastic stack version: 7.2.0

About are two discussions without any solution

Do you use a proxy?
Also, can you get us a HAR file from the loading part?

Hello @Marius_Dragomir,

No, I am not behind proxy, how can I upload the HAR file?

A google drive link or anything should be fine.

Hello @Marius_Dragomir,
