I got this bug before but could not reproduce it. Today it happened to me again.
Version: Stable 0.61.138043
Ran into the 2 tents, east from Gorka. Ran through the last tent and on the street it happened. Game froze, after 10 seconds, the images moves 1 fps and the sound is there for 1 second. Then again 3 seconds nothing. After that it repeats like before.
The image shows the state before closing the game via the taskmanager - nothing special
I can only close the game via the task-manager because the menu is also just with 1 fps available. I closed the game and restarted it. (everything in x64 client). Menu was fine with ~90fps. Joined the same server (private, nearly full). Waited for spawn about 10 seconds. Than "please wait" for 30 seconds, and boom, again 1fps.
The image shows the state after joining the game, its like the first frame of the game I saw (for nearly 10 seconds)
Same procedure - taskmanager - killed the game - opened again - this time 32bit client. Rejoined the same server and everything worked fine. Full fps again.
Intel core i5-6500
Geforce GTX 1060 3GB
16 GB ddr4 ram
When closing the game via the taskmanager i got 35% CPU and 45% RAM workload.