There are some more options to consider here. Many of the reported issues might be related to the USB connectivity. If you are an AMD Ryzen user, please have a closer look at this article:
AMD Suggests Possible Fixes for Ryzen USB Connectivity Issues | Tom’s Hardware (tomshardware.com)
As mentioned in the article, it is essential to have the latest chipset drivers and BIOS/UEFI installed.
AMD Drivers and Support | AMD
In support, we have had a noticeable amount of performance related (dropouts) inquiries that could be addressed with the above-mentioned updates.
Then there are crashes and freezes that are actually related to a MIDI issue on the operating system side. This has been described in here:
MIDI device app hangs when using MIDI API - Application Developer | Microsoft Learn
Cubase 12 introduced support for WinRT MIDI, but this is not the default setting in Cubase.
If available, please give it another try using WinRT MIDI as this might address at least some of the crashes and freezes reported.
Please note that while WinRT MIDI offers some advantages, it also comes with some disadvantages. Those are described in this article:
WinRT MIDI and Windows Bluetooth MIDI support in Cubase 12 – Steinberg Support