I see no video... Or did you post it to your page?
From what I've read (I'm a novice), your output rate should be less that your input rate.
IMO, the ratio is dependent on your local water quality. As long as the output TDS= 0, then your ratio is fine.
For my RODI, my output rate is only slightly less than my waste rate, and still produces 0 TDS. The waste water is over 700ppm