I have posted about this before - contacted support and tried all that was suggested, same problem. When exporting a mix Cubase crashes (freezes) sometimes even without creating a crash dump.
The last support person suggested a plugin may be causing the issue, but given that NOTING has changed on my system other than updating Cubase that would be no justification. And in fact, it would only re-enforce the theory that the update has issues, not the other way around.
The workaround, at least for me, is to render from a GROUP, NOT the stereo out. So, that might provide a clue to the programmers. I usually have groups for the mix anyways but, I used to render from the main stereo out.
I see numerous other posts about the same issue as well as other crashing issues, I hope it can all be resolved soon and I appreciate all the help from support, btw which has always been reasonably prompt.
I am attaching my last crash dump file, for reference.
My system: Win 10 64 - Cubase 10.5.12
Cubase 10.5.12.123 64bit 2020.2.25 16.17.30.026.dmp (924 KB)