Soundcore always misses start of audio

Anker Soundcore A3102. The start of an audio stream is always missing - the device takes about a second before any sounds comes out. It’s the same on both Bluetooth and Aux. For language learning applications this makes it almost unusable - the phrases may be only 1-2 seconds long. Is there any way to keep the speaker continuously active? I don’t care about battery life for this particular application.

Apologies if this topic is already discussed somewhere - I couldn’t find it.

Have you tried a reset of the speaker?