Which WiFi router / access point to choose for video streaming?

Question

WiFi

You need to organize a stream from 4 devices that support 802.11n at a frequency of 2.4GHz that can move quickly (these are small quadcopters). A high quality video stream is transmitted via UDP at a speed of up to 1.5 megabytes / s from each device. All devices are in direct line of sight and at a distance of no more than 15m from the router. There are no other Wi-Fi networks nearby, so there should be no interference. There is a question in choosing a router or access point in order to minimize delays "over the air" and which would be guaranteed to give 1.5 megabytes of upload from each device.
Z.Y. It is also interesting whether the copters will interfere with each other a lot when working on the same wifi channel? Maybe it's better to let two through one channel, for example, the 1st, and the other two through, say, the 11th? If this makes sense, then advise a router that supports dual-channel operation. Well, or I can buy two routers.