I'm getting this as well on multiple servers. It's just a slight freeze and then continues. lasts just a millisecond but noticeable.

Yep. Green Building with side stairs, Log cabin. Deer stands and Barns. Never bother checking them at the present as no loot.

First impressions are that there is not enough food or drink available. But... You have to remember that at present lot is not respawning until server restart which greatly diminishes the available loot. Until that is fixed, yes it will be tough to loot food and drink around spawn locations obviously.

The best thing to do is head immediately north and find a village where all the doors are still closed. There you will find food and drink aplenty.
I have run from Kamenka all the way north looting every major twon up through Grishinko and back down all the way to Cherno again and I was "Healthy" up until i was shot in the back of the head in Cherno town centre. It is very easy to stay healthy if you know what you're doing.

This happened to me in the Log cabin. The usual one that was accessible in the mod.
As you first enter there is a locked door in front of you. Usually you would turn left into the single room. But in this case i had a zed follow me in and push me into the back invisible room. I was stuck for ages until eventually a Zed glitched in with me and I was able to get him to attack me. That took ages as well but finally bled out.

confirmed. a couple of the castles need vaulting to access and even then the loot is inaccessible and visible in the ceiling above you.