To be fair they "only" have a 20 Mbps laser uplink from the capsule to Earth, and that's shared between all the systems and uploading images/video.
260Mbps? https://www.nasa.gov/goddard/esc/o2o/
"Uplink" means Earth to spacecraft. Spacecraft to Earth is downlink.
260Mbps? https://www.nasa.gov/goddard/esc/o2o/