The Beeb is aiming for all iPlayer radio streams to be 320kbps - but for the UK only.

Anyone overseas will have to make do with 96kbps max - that is unless connected via a UK VPN.

Its part of the DASH technology - for which iPlayer Radio (and get_iplayer v2.95) is being prepared.

Meanwhile iPlayer Radio (and get_iplayer v2.94) offers mainly 128 kbps to the UK, and 48 kbps for overseas.

https://squarepenguin.co.uk/