2.4ghz rx rate how to speed up?

Hello, I have a RE505X and it is not working stable. I have HTCP problems and I haven't been able to fix it. The ping is high. Is there a problem with the device itself or is there a software problem?

Lagging issue on live TV There is a lot of lag in live broadcasts. I tried RE220, there was no problem in live TV. There is no lag in the main modem.

The network extender is connected to the modem with 5G, after a few hours it suddenly disconnects and does not connect again. I scan for 5G modem from the app, it doesn't find any networks. There is...