If it’s happening and you really have new USB adapter with 5.2 V, try to use another USB-C cable, eg. shorter one. Would be useful also to share the sysinternal Alarms screen, when it happens.
Unfortunately it is, our HP23 have passive heat-sink only - CM4 CPU start throttling at 85C - while some chips also don’t like so high temperature, eg. 85C is the limit. If you have LED enabled, you may want to turn them off, it will decrease a temp by aprox. 4C if you believe 70C is too much. But more apps more load you will add, the temperature will grow. But unless you get another CPU overheating alarm, you are fine (kind of)
