Progressive FPS degradation appears to be related to dota2.com — blocking the domain prevents the performance loss

### Description Dota 2 progressively loses performance during a single client session. FPS decreases both within an individual match and across consecutive matches while the same Dota 2 process remains running. I found a reproducible workaround: blocking dota2.com through the Windows hosts file almost completely prevents the progressive FPS degradation. The entry is: `0.0.0.0 dota2.com` This does not block the actual game servers. Matchmaking and normal matches continued to work during my tests. System configuration CPU: AMD Ryzen 7 7700 GPU: AMD Radeon RX 9070 XT 16 GB RAM: 32 GB DDR5 OS: Windows 11 Pro Resolution: 2560 × 1440 Refresh rate: 320 Hz Rendering API: Vulkan Changing graphics settings has very little effect on the degradation pattern, so this does not appear to be a normal GPU bottleneck. ### Behavior without blocking dota2.com After a fresh launch of Dota 2: First match: start: approximately 300–310 FPS; after around 15 minutes: 200–220 FPS; end of the match: approximately 185–190 FPS. If the client is not restarted, the next match already starts at a significantly lower performance level. Second match: start: approximately 200–210 FPS; end: around 160 FPS. The following match may start at only around 180 FPS. If I continue playing using the same Dota 2 process, performance eventually degrades to approximately 100–110 FPS. In other words, each subsequent match appears to inherit part of the performance loss from the previous one. ### A/B test wi

Posted by YOZH3G on Sep 16, 2026, 5:01 AM

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