You found it.

It really was some weird MIDI signals.

Minimalistic did the trick

Thank you soo much, you saved me

I'm not sure offhand if Pianoteq can be set to ignore it CC67 but if you're using it in a DAW you should be able to filter out CC67 with an MFX.

Check your Preferences under the Midi tab, and select a factory default setting like Minimalistic which should only have 5 parameters, none of them key events.  If that isn't the source of the problem, it's further possible that your controller is simply sending errant midi events.  What model is your controller?  Does this still happen when you play back the sample file in addition to playing live?  You can monitor all Midi events from that Midi tab, and see exactly what happens or triggers the problem.  Since you're encountering this globally, it's probably gotten baked in the Preferences menu, not related to Presets--though sometimes there are issues where theoretically presets retain global preferences regarding midi.

That one sounds weird!
So we're looking for weird things.

Is it possible that you have accidentally mapped a MIDI controllable setting in Pianoteq to a control potentiometer or slider?

To this?:

Is it possible that you have accidentally mapped a MIDI controllable setting in Pianoteq to a control potentiometer or slider?

Hm, that's a weird one.

Have you tried it without the audio interface?
Unplug it and switch to the internal sound chip of your computer.

Do you have any peaks in CPU usage? Whether it's PTQs or the windows CPU meter.

Do you have the latest drivers?

Are your cables fine?

Does it make any difference when using Emu0202s headphone jack?

Odd.

Thank you for the tips.

I don't have any peaks in CPU. It's about 15 percent max.
I switched my external audio card to internal audio on board and used ASIO4ALL drivers. To my surprise it was the same ugly sound

I have the latest drivers although EMU doesn't exist anymore.
Headphones or regular repro system - doesn't make any difference either.

Also cables don't make any difference, because I can click with my mouse on virtual keys in Pianoteq and it's the same aweful sound.

hmm... I thought it would be a quick fix

Have you tried it without the audio interface?
Unplug it and switch to the internal sound chip of your computer.

Do you have any peaks in CPU usage? Whether it's PTQs or the windows CPU meter.

Do you have the latest drivers?

Are your cables fine?

Does it make any difference when using Emu0202s headphone jack?

Odd.

I've got long term problem with Pianoteq and that is that sometimes the sounds from Pianoteq are terribly baffled.
I've got it with version 6 and when 7 was out I never got that. But now it appeared again and I can't get rid of it.

Here is what a piano should sound and sometimes does: https://drive.google.com/file/d/1i6uzQ_...sp=sharing
this is the sound, that I've got all the time now: https://drive.google.com/file/d/1NrGjTC...sp=sharing

It's the same track, exported twice. It's Steinway Binaural. But it doesn't matter what piano I choose. It's doing on all of them.

I hear this sound using Pianoteq as VST plugin and in Pianoteq standalone as well.
I thought it's some kinf of effect got wrong. So I turned all of them off. It's still there.

I don't get it. I play the song and the first half is perfect and in second half it got baffled.

I have Windows 10
Pianoteq PRO 7.5.4 64bit. But I tried all versions. It's all the same.
Sound card EMU 0202.

Do you have any suggestions?

Thanks, Filip