Remote control using raspberry pi and laptop


I want to control the ROV connected with the raspberry pi 3 and the tether on the laptop.
(Raspberry Pi and laptop use a common Wifi.)
So I tried several methods, one is a remote program.
However, this method results in too much delay and low frame rate.

The second method is raspberry pi 3 as a Wifi access point with hostapd.
But this is the answer that I posted before.

Are there other ways than these methods?