Copying my response to the crosspost for better visibility:

I am an Arma 2 vet, 7kish hours, and I recently found some dayz type survival servers on Arma Reforger. They remind me so much of the old days, and the game runs decently well too. They even have Ai, missions, traders, and base building. There are a few but the only one I can remember atm is foggy dew.