This site is a collection of information on a problem with Half-Life 2 that has plagued many players of this otherwise excellent game. This problem is characterized by a sudden massive drop in frame rate when turning corners or moving into new areas of the game. These drops are usually accompanied by looping or stuttering sound during the frame rate drop which is how most people become aware of the problem. Aside from these isolated drops in frame rate, the game is otherwise perfectly smooth. These sudden drops kill the immersion and lead to a very frustrating experience. Below you will find additional details on this problem, some theories, and all responses from Valve on this problem.

New Potential Solution From Valve (Dec. 7, 2004, 1:37 p.m. UTC)
Valve's DougV mentions a new potential solution in a post on the Steam Users Forums. For users experiencing audio stuttering and "Memory cannot be read" errors, installing the latest version of the Miles Sound System may fix the problem. Full details on acquiring and installing this are in his post. I installed this and it had no impact on my stuttering issue.

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Mark McWilliams