Updates to Counter-Strike: Source, Team Fortress 2 and Day of Defeat: Source have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Engine

• Tuned thread initialization to improve performance on CPUs with more than four cores

Counter-Strike: Source

• Fixed leftover shadows when ragdoll physics are disabled
• Added stats gathering to track client and server performance
• Added instrumentation to help debug network issues
• Disabled some unsupported threading convars

Source Updates to Counter-Strike: Source, Team Fortress 2 and Day of Defeat: Source have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Engine

• Tuned thread initialization to improve performance on CPUs with more than four cores

Counter-Strike: Source

• Fixed leftover shadows when ragdoll physics are disabled
• Added stats gathering to track client and server performance
• Added instrumentation to help debug network issues
• Disabled some unsupported threading convars

Source