Ideal system for Home assistant for surveillance

Hello all,

On my lovelace dashboard there is a picturecard with a Reolink stream.
When i use the PTZ on the Reolink app, and compare this with the view on my lovelace card, then it takes 3 seconds or more till i see actual movement.

In the camera i did some optimisations to bring the decrease the cpu load, but without

I have a NUC i5/32Gb where HA is running on a ESXI server.
What can i do to increase the reaction speed of HA according the PTZ camera?