sometimes it happened to me not far from NW airfild.. i was in svetlo and my game was also crashing...5-10 minutes from logging on server.. i was forced to leave this town

I had problem with this building at several locations too. It seems like there is part of some invisible texture or object. Just try to jump over the stairs and you are in. Worked for me

Happened to me too.. Found dead guy in Berezino, standing near building. He was bleeding but he was 100% dead because i could loot him.. Got M4 from him..

i can confirm this.. same is happening to me.. i just turned off post processing.

performance:
Win 7 64-bit
Intel i7-4770k 3,5Ghz quadcore,
Zotac Geforce 780 Gtx, 3gb DDR5 RAM,
Crucial Ballistix Sport 16GB DDR3, 1600MHz

Same problem here, but not with spawning. I was on top of tower of castle, had one mosin in inventory and M4 in hands. I was thirsty so i dropped M4 and drank soda. unfortunately that M4 disappeared. When i was coming back downstairs i noticed that the m4 was under ceiling. there is no way how to retrieve these lost items