@Juanito69 

Hi, welcome to the community.

Are you trying to say that, from the first main Deco S7, you could get about 400m/s, but the speed from the satellite Deco S7 is up to 90m/s?

Is the satellite Deco S7 wireless connected to the main Deco S7?

If yes, it is suggested to refer to this link-Why is my satellite Deco unit not getting the same speed as the main Deco?

How about the distance between these two units?

Is there any chance that you could connect the satellite S7 via an Ethernet cable to the main S7?

Thank you very much and best regards.