I have had the same problems over the past year, and in similar conditions. I only use it for recording and editing, do not use MIDI or IAA, and keep the CPU well in the green.
Dragging (moving) audio often crashes Auria.
The more splitting, copying and individual clip editing you do to any one track, the greater the chance becomes that you will get a corrupted file that may even prevent the entire project from loading or playing back properly.
The only advice I can offer is back up frequently and use the Snapshot function. I use AudioShare to save the original, pre-edited WAV for each track. If something goes wrong, I still have the original.
With effects plug-ins, always save a preset with the track name once you have the settings where you like them. Again, good insurance if something goes wrong
On the plus side, I've never had more than one individual track get corrupted in any project.
I love Auria, and prefer working with this interface to my desktop, but I have had more corrupted audio files in one year on Auria than I had in ten on my desktop. The lack of stability has put me off going to Auria Pro. I would love to have MIDI and IAA/AU running as well, but given the performance problems just with audio, I am not confident enough to increase the burden. When everything works, it's brilliant; i'm still using it, and have successfully mixed down finished tracks running multiple instances of fab filter fx, so it is possible.