This does not sound Rachmaninovish. Are you sure
this is Rachmaninov's transcription?
Of course this is Rachmaninov's transcription juuf. You have all music ever written on DVD, you should know.
Now does it sound Rachmaninovish ? Should it do ? Probably not - he was an incredibly skilled and sympathetic transcriber, not out to put his personal hyperromantic marks all over a piece like this. Actually this transcription (and the two other items that precede it) are IMO some of the best piano transcriptions ever made.
This is new for me. What do you think about the tempo and technique? I also played around with reverb. Is it too much?
You play it quite cleanly, and no quibble about the reverb.
But hard to say about technique... this should go at about twice the speed really, and then it is very very difficult. At this tempo it sounds more like an early Haydn minuet than a Bach gigue. There were quite some wrong notes in the second half, and I don't like the long pauses you insert between phrases (although it is difficult not to do that, especially at full speed, as the jump is considerable).