Novation Summit - problem with distorted first note after patch change

[mwax]

I'm concerned about whether I should return the device to the store or if this is typical for this device. It looks like a firmware issue, but what if not? And there was no firmware update from long time...

That's why I'm looking for someone who has it and can confirm or deny this behavior. I don't want to give it away because it's a great synthesizer, but I don't want to be left with a broken device.

When I change patch, most of them causes sound distortion on first note.
Examples of patch change
1. Init Patch (!!!)
2. Guitar Patch
3. SingleWavez
4. Breathy Trunpet
5. 3 Osc BassSynth
6. 4>8>12 UnisonPWM
All of them are copied patches from banks A-C saved as patches in bank D. But it also occur in oryginal positions.

You can hear first note is distorted after changing patch from to:
Init Patch -> Guitar Patch
SingleWavez -> Breathy Trumpet
3 Osc BassSynth -> 4>8>12 UnisonPWM

I have last avaiable firmware version and its brand new synth...

When I press something on panel (even disabled as f.e. button A) after patch change and before play note the distiortion does not occur. It mostly doesn't occure when before change patch I move time delay rotary down to zero before playing note.

I ran even some more tests, and it seems the problem occurs with patches that have a delay level set (if the patch I'm changing to has that value set). The higher the delay level, the more distortion there is for the first note.

It's also strange that if I hold down a key while changing patches, the problem doesn't occur.

Novation support - silence and no response.

The problem is audible for many presets and I have provided examples above.