SlowAnimationFix_mm

Experimental metamod plugin fixing slow-motion/sluggish animation bug on CS2 servers.

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Problem

After a CS2 server has been running the same map for a long time without a map change or restart, players experience slow-motion animations and sluggish movement when joining.

Root cause: curtime in CGlobalVars is a 32-bit float. As it grows larger over time, floating point precision degrades — at ~24h uptime the precision drops to half a tick, at ~48h it exceeds a full tick interval. This causes animation, movement and lag compensation to produce incorrect results.

Valve never added a reset mechanism for curtime in any code path.

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What it does

• Hooks ISource2Server::GameFrame every tick
• When curtime exceeds a threshold and the server is empty, subtracts a large offset from curtime and adjusts tickcount accordingly
• Preserves all relative time differences — entity timers, think callbacks and scheduled events are unaffected

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Result

• Server can run indefinitely on the same map without the slow-motion bug appearing
• No map restarts required
• Zero impact during active gameplay — correction only happens on an empty server

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Notes

• Marked experimental — the fix is based on reversed CGlobalVars offsets from libserver.so and libengine2.so
• Tested on 64-tick dedicated servers
• Default threshold: 1 hour of accumulated curtime on an empty server

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Requirements

• Metamod:Source (CS2)

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Author

Slynx (˙·٠● S l y n x ●٠·˙) https://slynxdev.cz