The link speed the ps5 is showing may indicate a 1x1 configuration. You would only know if you moved it closer to the router and it would not go above the 1201 number.
But you seem to have normal connection speeds so possibly what you are seeing is due to the type of files being transferred or something is managing your bandwidth.
I suppose the question needs to be, are you seeing specific problems with the operation of your systems due to low bandwidth? It seems the router is getting full ISP speeds, as are your other devices. So, since your link speeds are normal, it would not seem something on the Router was limiting your speeds.
Edit: I forgot to mention, the speeds you see on the ps5, if it is 1x1, will be about 1/2 of the speeds you see on 2x2 devices.