As you can see in the video (which happens to be mine 😅) this is indeed quite a bit of an issue. I too used other GPWS sounds from another addon which don't have the 'silence' in the audio files before it, but it didn't completely fix it for me actually. Could it be that the sounds are simply not timed properly or that they are not preloaded into the RAM so they can be played instantly? My sim is on a HDD which, although it's not that slow, is naturally slower than an SSD. Other than that, really enjoying the Embraer so far!