I owned a ZS EV for 4 months in 2022 (Car was totalled)
I now own a 2025 ZS EV
Back in 2022, the app was very intermittent, would sometimes not connect at all, but one thing that was certain if it did, it was......Painfully slow.
Now in 2025 i can report that......It's absolutely the same.
If they did not do anything about this from 2022, until 2025 there are 2 possible explanations.
1. They don't care.
2. There is some architectural reason and they can not do it. (I'm betting this is the reason)
The wait is even worse now, because next to the ZS EV, is a Tesla...Their app connects to the car, even if it is deep sleep, in about 10 seconds, the ZS EV seems to do it in 30...When it works.
I think the thing to get out of this is....You'll just have to live with it...Sadly.