I checked this out in the RDSS source code. Typically, when there are incomplete call times, or beaten length values, or races outside of 4f - 12f distance, RDSS skips over computing velocities and also final time ratings (Adjusted Speed Rating ASR and True Speed TS)
Apparently several years ago I made a change to permit showing at least the ASR and TS when final time info was available, but for some reason (lost in time) it was never implemented - as shown in the missing ASR in this race!
I reinstated that previous code change today but need to test it further before including it in an update.
Thanks for bringing this to my attention!
Ted