I run TrueNAS-12.0-U2.1
I noticed the system would go unresponsive when downloading torrents at about 80MB/s, but would eventually go back online. Still, abnormal for a Ryzen 5 2600X with 32GB of ram to go unresponsive.
I installed a Intel EXPI9402PT Dual Port gigabit NIC from an HP server I had lying around, and the unresponsiveness turned into all out crashes.
I'm running the latest update of the qbittorrent plugin. In order to investigate I created a torrent on my other machine and downloaded via the plugin it at near gigabit speeds. The monitor plugged to the server goes blank, all HDD seeking noises stop, and only a hard reset will bring it back.
I can reproduce this crash reliably, but I'm fairly new to this so please do let me know which logs you need, and I will upload them.