We are currently testing the RAK3172 module for our Lora end devices. We have ensured that adaptive data rate is turned off on the device and set the data rate to 1 using AT commands. As soon as we join the Lora network and check the data rate, we can see that it has been set back to 0. I would only expect this behavior if ADR is turned on. We are using the RAK wisGATE edge 2 gateway as a Basics station and AWS IoT core for lorawan as the Lora Network server. Changing the data rate after the join allows us to send the packet sizes we need to, but I am curious as to why the data rate would change after joining the Lora network when ADR is turned off.