I have given the LXC 6 GB RAM (DDR5 ECC) and 2 CPU cores (AMD Ryzen 7 PRO 8700GE w/ Radeon 780M Graphics) and 2GB Swap (NVME M2 SSD Gen4 from Samsung).
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Now it happens from time to time that the LT process uses 100% of memory, swap and both CPU cores and gets unresponsive, and I need to kill the LXC and start it again. It happens “random” patterns where I can’t find any root cause of the issue. Sometimes even at midnight while I’m sleeping, during the day when I use it and so on.
Quote from my post – Memory Leaks and CPU spikes with LT
Is this like your issue, or could it be related?