DCT shift time inconsistency

This happened more or less in every DCT vehicles, both the upshift and the downshift time is not consistant.
Note the M number changes and the RPM gauges. The 200~500ms lag is noticeable, especially during downshift. It would be better to leave the shift lever in D in non-aggressive driving, only use M in racing, where the lag is less likely to happen.

Check out the videos in the attachment

 

Understood. However another thing is the rev-match is not synchronized when the downshift is delayed

 

Im gonna do a video later, my problems is that the engine do some "jumps" of RPM while downshifting several speed, I didn't saw @default0.0player's videos but his description looks pretty close to my problem (I will try to show it later in a video, im not on my computer right now)

 

The thing is when the preselected gear is not matched, the shifting time is delayed(not a bug), BUT the rev-match throttle time is not synchronized with the delay, which leads to a noticable jerk in some downshiftings.

 

A good way to recreate this is to drive a DCT vehicle at M2 at a constant speed for a few seconds where the RPM is in mid-range such as 3500, then downshift to M1. The TCU probably preseclect to 3rd gear so shifting to 1st is delayed, then the mismatched rev-match throttle will be noticed.

 

Not always appeared at a steady RPM, but a steady RPM is the most likely to recreate the phenomenon and easy to observe

 

I don't know what default player is talking about (but it seems really relevant !), but the problem I was talking about is this :
The Sunburst's DCT works better than SBR4's one, they both have the same problem but the DCT6 upshift and downshift a little bit smoother than the DCT of the SBR4
(btw i think the gearbox agression reduce too slowly but that's a personnal opinion) @Diamondback

 

Here's the video, the clutching and the rev-matching are not synchronized.
I also discovered some other problems.
1. In D, shifting form 1st to 2nd gear is always above 3000 RPM regardless of throttle aggression
2. The 1→2 shifting time is about twice the time of 2→3 or 3→4.