Primary issue with N tends to be client density, secondary speed, but really both are related anyways. Also the compute module is single antenna, most N devices were at least 2x2 which doubles the throughput. I.e. expect 100 Mbps half duplex throughput to be a "very good" connection on such a device.
That being said the device actually supports WiFi 5, the page just seems to be out of date. Still only 1x1 though which is the bigger travesty.
Care to elaborate a bit on why ? I have been using n for years at home and at my office without any problems. It seems much faster than b and g which I had before.