Hi,
I am pretty sure that Canon has an excellent utility for controlling the camera from a computer. Shoot using that and use a watched folder on LR.
I don't know why anyone would use a mediocre tool in Lightroom for tethered shooting when there is a very good one from Canon.
Just to say, I have not used Canon's tool on 5DsR, but have used it on the 5DIII.
Best regards
Erik
Not sure I'm understanding. Are you tethering to drive the camera from Lightroom or are you looking for image viewing and downloading?