Virus Snow glitches

[iSynth]

Нello. I bought Virus TI Snow and I have problems with it. After turning on after a while the sound starts to get hung up and the Snow began to produce the buggy and glitches sounds. Firmware update does not help. It occurs in both cases with USB connected to my Mac Pro and without USB connection. It even happens if i press the EDIT/SHIFT + AUDITION buttons. Also this happens even if Snow generally not connected to a computer or other MIDI equipment. This happens regardless of whether i use the Virus Control plugin or not. Even when i use the Snow as an external MIDI synths, this may also occur. Sometimes runs one minute and sometimes more before that happens, always in different ways but in any case sooner or later it happens. Pressing panic buttons (EDIT/SHIFT + TAP TEMPO) does not help. I have to constantly switch power off and switch on again to stop this horrible sounds. So it is impossible to work normally and I'm beginning to regret that i bought the Snow.