Delays are a frequent occurrence
The thing is that the entire flow of events on modern devices (phones) does not work as it did on the old ones (standalone) - the software issues a command, addresses the launcher, then the driver, the latter transfers it to the audio subsystem, and only then does it sound. And you've already crossed 30 meters.
Use newer iGO (Pal) it can help sometime
And/Or set notifications to appear earlier and be aware of the difference
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