RM502Q-AE slow 5G NR speed on T-Mobile

Technical Subjects Hardware Baseband
1

Seeing slow speeds on a RM502Q-AE on T-Mobile using LTE NR 4G. Currently using ECM, tried QMI and MBIM but no difference.

Bands in use (sometimes B66 comes in at 20MHz as well):

B2 (Bandwidth 20 MHz Down | 20 MHz Up)
n41 (Bandwidth 60 MHz)

… sometimes B66 added at 20 MHz

Signal is great I believe

CSQ : 28   
Signal Strength : 90%   
RSSI : -57 dBm   ECIO3G/RSRQ4G/SS_RSRQ5G : -10 dB -11 dB   
RSCP3G/RSRP4G/SS_RSRP5G : -95 dBm (RxD -94 dBm) -99 dBm (RxD -97 dBm)   
SINR : 12 dB dB 14 dB

However I’m only getting ~80-150Mbps, whereas other devices on the same exact bands like an iPhone get 500-600Mbps.

Any ideas?

2

What is the RM502Q-AE plugged into? Is that device unable to pass data at a higher speed?

3

On a ZBT WG1608 with USB3 M.2 and confirmed able to handle well over 300Mbps.

4

Well, can close this thread. The WG1608 is not able to handle the traffic even with hardware offloading. I have tested in a separate USB sled and am getting 500Mbps+