Not sure about other setups, but on my Wattbike Atom it feels like you’re still climbing for quite a distance after the gradient eases off.
Almost as if the game still thinks you’re on the escalator …
I have a similar thing on my Elite Direto XR and ATV setup. I don’t usually have any problems with gradient lag, so your post makes me wonder whether there’s a problem on these escalators?
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Yes same here on a Tacx Neo.
However I have tried not pedaling up the escalator. I wonder whether the feeling of gradient is due to Zwift thinking your speed is zero, whereas your speed is the escalator speed, and you are now trying to increase speed from what Zwift might think is a standing start in the wrong gear ?
Later I will see if there is the same feeling when pedaling up the escalator quickly in an easy gear.
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There is. Ever the empiricist, I already tried this! 
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there’s a slight delay on my 2T hitting the escalator before it decides its actually at 19%
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That’s not the case for me, in that I continue pedalling on the escalator against the much harder resistance (and I’ve changed down my physical gears to help with that).
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When doing a nice, chill Z2 ride today I dropped down from gear 9 (of 22) @ 85rpm to gear 4 @ 85rpm. This was all good until nearly at the top of the escalator, at which point to maintain my lovely 150 watts I had to drop my cadence waaaaaaay down. Over the next 20 seconds or so - on a level road - I had to very gradually increase my cadence while slowly clicking up through the gears to maintain (ish) 150 watts.
Not a problem. Just a curiosity. Would actually be quite useful in a race scenario to give something to push against if attacking.
I had the same thing on the Wahoo KICKR SHIFT as well as Wahoo ROLLR - delay in gradient feel hitting the escalator, and a significant delay dropping the gradient feel after the escalator.
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Lol, whatever you say but I think I know how to ride my bike on Zwift at this point and how trainer difficulty actually works.
At what point does the escalator provide assistance? 
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Started yesterday with 38km/h, no pedaling and was transported up the escalator at same speed.
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I’m having an issue where my kickr climb will be stuck an extra 5-15 (eternity?) seconds after climbing and descending the 19-20% ramps around the new sections of NYC. It don’t happen every time, but it’s very uncomfortable to be stuck aiming fully down or fully up when the grade is back to 0% or whatever.
Seems more like what gear you are in at the start of the ramp and how much power you are putting into the climb.
My Atom X seems fine if I hit the ramp in gear 11 doing over 700W but if you stop going hard before the 0% you are very quickly in trouble with your gear choice, you feel like you have suddenly hit a brick wall.
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Please could you explain to me how the gear you use and the power you put out changes the way the Kickr climb works.
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Thanks all for flagging this up. It’s helpful to see which trainers you’re using so we can triage this bug more quickly.
If you’d like to weigh in with more details - it’d help to know which route / subway had this gradient lag. The three subway stations each have a different look, so a screenshot would help us identify which escalator you’re reporting.
UPDATE: those of you weighing in so far are forum regulars. Have you noticed the same sensation on the ramp exiting the London Underground? That is a similarly abrupt gradient change from 0% to 19%, minus the boost effect on the NYC escalators.
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I’m surprised that the watts would affect the kickr climb being stuck at max or minimum ramp. I’ll give it a try when I do another route tomorrow.
It doesn’t
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Glad to see it doesn’t lol. Hopefully other kickr climb people can comment to see if they have this problem too so we can get a fix going.
I’ve noticed this extra resistance on the ups as well (Saris trainer). Equally, when you go down the new steep ramps in NYC, it’s very light going for a few seconds on the flat before it restores “normal” resistance for the flat, which is easy to compensate with gear changes. I wasn’t going to complain because it’s actually quite welcome(!). But seems to be the exact opposite of the up ramps.
In London, it’s definitely not as pronounced (although can’t say it levels off exactly in line with the end of the ramp).
No, the London tube ramps feel different to me. On those there’s a small lag in the gradient returning to flat at the top but it feels acceptable to me, i.e. it feels like my trainer just taking a couple of seconds to adjust.
On the NY escalators (sorry I will have to check exactly which ones these are) it feels more like a misalignment of the gradient to the graphics, because the lag feels a lot more than a couple of seconds. I will have to re-ride to try and time it.
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What would be worthwhile seeing is what it feels like with the escalator function turned off / disabled for a week or two, then see if the feeling of the delay in the gradient reducing is still there.
Yes I realise that won’t make people too happy that they have to slog up 19% at very slow speed and high effort for longer.
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