@TP-Link Thanks for the reply. Will wait patiently. Cheers!

@Kevin_Z Hi Kevin Same problem as the original poster. My provider offers Band 3,5 and 40 - Archer MR400 sticks to Band 40 that delivers speeds less than 1Mbps while band 3 and 5 from same LTE tower...

@Sunshine Same problem as OP but my Hardware version is MR400 V4. It is really annoying (to work from home) with router switching bands automatically. Please see that Band 5 and Band 3 are stable...