To saturate 2.5Gbps in a single direction with WiFi 6/7 modulations with 2x2 MIMO (most phones, tables, laptops have 2 antennas), you need a (total) channel wid

To saturate 2.5Gbps in a single direction with WiFi 6/7 modulations with 2x2 MIMO (most phones, tables, laptops have 2 antennas), you need a (total) channel width of 200MHz, and that's for devices in the same room as the AP. If you want to saturate it with devices in the next room, you need closer to 240-300MHz, for example: using say you use MLO with 160MHz on 6GHz, 80MHz on 5GHz and 20MHz on 2.4GHz), totaling 260MHz.