On occassions, why does the game go to a loading screen for a few seconds or so. Apart from going to a new area, it could happen whilst I'm walking around the environment. The last time it happened was when I killed someone. Then it reciprocated a bug, where as everything in the game world was transparant and I could only see Geralt and monsters.
It doesn't happen so often that it's bothersome, but what causes it? Memory problems?

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