I am experiencing the same issue and thought I would add my name to the growing list. I can play for about 30 mins to about an hour. After that, the game crashes. If I try to log back in, when I hit the button to connect to a server, the game starts to rapidly eat up memory. I can see it doing this by opening the windows task manager and watching the memory in use by the black desert application grow very fast until it uses up 100 % of system memory. At this point, the game stops / shuts down with the error "client will be terminated due to lack of memory". The work-around for the time being (or at least what works for me) is that I can delete all files in my game cache folder. This lets me back into the game for 30 mins or so, but after that the game crashes, the same issue repeats and I need to do the same thing all over again. This all appears to be new behavior since the last update, perhaps may have started around the time they introduce the koi with the new fishing event, although it appears to happen to me even when I am not in the fishing area, so who knows?