Sending Only Real Values with USRP N210 and LFTX/RX

Hi everyone,

I have a question that might be quite basic:
I am using a USRP N210 equipped with the LFTX and LFRX daughterboards.

For my application, I require a sample rate of 33.33 MSps. However, as soon as I increase the sample rate from 25 MSps to 33.33 MSps, I encounter frequent underruns.

My assumption is that both the real and imaginary parts of the signal are being transmitted over Ethernet, which exceeds the 1 Gbps bandwidth limit.

My question is: What do I need to change in the UHD Source/Sink block to transmit only the real values? Are there specific settings or configurations I need to adjust?

Any help would be greatly appreciated.

Thanks in advance!
Nils