I have this weird bug where the engine just seems to get progressively slower. It starts to feel noticeable after a half minute or so, then will really kick in after another half minute or so. So far I've established that:
- It's not input lag, everything moves slow.
- It's not memory consumption or similar.
- It's not hardware, drivers or DirectX; same symptoms on different machines.
- It's definitely isolated within Quake; other Direct3D apps run fine.
- It's not the renderer, even in slowmo mode a timedemo still runs at normal speed.
- This led me to a possibility of host_framerate creep, but it's not that either.
- Putting cl.time out to the console reveals that it's definitely affecting cl.time. The initial kick-in seems to be about 25 seconds.
- Checking the deltas for all of Quake's timers reveals that they don't creep, yet cl.time is getting progressively slower.
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