Fix ETW Logging – Stop Hidden CPU Usage & Stutter in Windows

Ever noticed random CPU usage in Task Manager or weird frametime spikes in games — even when your GPU isn’t maxed? That’s ETW (Event Tracing for Windows) quietly running in the background. By default, ETW constantly logs diagnostics, network activity, and telemetry you don’t need. The result? CPU overhead, disk writes, micro-stutters. In this guide, I’ll show you how to: ✅ Identify active ETW sessions ✅ Disable unnecessary Autologgers in the registry ✅ Kill running ETW sessions with CMD ✅ Stop Windows telemetry services from respawning them ✅ Tune SystemProfile for gaming latency 🛠️ Commands & Registry Paths Step 1 – Check Active ETW Sessions logman query -ets Step 2 – Disable Autologgers Registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger → Change Start = 0 on Diagtrack, LwtNetLog, WiFiSession, etc. Step 3 – Kill Active ETW Sessions logman stop "DiagLog" -ets logman stop "WdiContextLog" -ets logman stop "LwtNetLog" -ets logman stop "WiFiSession" -ets Step 4 – Disable Telemetry Services CMD (Admin): sc config diagtrack start= disabled sc config DPS start= disabled sc config WerSvc start= disabled Step 5 – Optimize SystemProfile Registry: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile → SystemResponsiveness = 0 → NetworkThrottlingIndex = ffffffff HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games → GPU Priority = 8 → Priority = 6 → Scheduling Category = High 🚀 Results After Tweaks ✔️ Lower CPU usage ✔️ Reduced DPC latency ✔️ Smoother frametimes ✔️ Snappier input response 💬 Did ETW logging cause spikes on your PC? Comment below with your results and setup — I’ll help fine-tune. 👍 Like & 🔔 Subscribe for more hidden Windows performance tweaks.