Cubase Crash

Hi, everyone!
I need your help.
Cubase Pro 10.5 ALWAYS crashes when I change buffer size while I working in my project or export mixdown to mp3.
I disabled VST in the tracks and VSTi, but it didn’t help.

I use iMac 2017 IntelCore i5 8gb RAM, MacOS Catalina 10.15.4, interface PreSonus Audiobox 22VSL.
Plugins in projects: Waves Complete, JST Toneforge, GainReduction, JST Finality.
VSTi: Kontakt 6, Steven Slate Drums 4, Massive X.

This is my Cubase crash dumps:

Thanks and best regards,

Hi and welcome,

All the crashes are in this plug-in: AudioAssault Toneforge.

Thank you!