Stutter every ~5 seconds due to monitor event changes

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Doug51

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2023/08/06 16:34:11.5876##_##INFO:L1##_##displayfusion.exe:5740##_##TaskbarManager:TaskbarRemoveAllTASKBARMANAGERTHREADONLY:2149##_##-##_##Removing All Taskbars: TaskbarManager:ProcessTaskbars:NotEnabled:TaskbarManager:TimerUpdateCallback##_##-
2023/08/06 16:34:11.6658##_##WARN:L1##_##displayfusion.exe:5740##_##FormMain.WndProc:WndProc:356##_##-##_##WM_DEVICECHANGE:DBT_DEVNODES_CHANGED detected.##_##-
2023/08/06 16:34:11.6658##_##WARN:L1##_##displayfusion.exe:5740##_##BFPublicData:ForceUpdateMonitorsUITHREADONLY:820##_##-##_##Reason: UpdateMonitorEnums:FormMain:WM_DEVICECHANGE:DBT_DEVNODES_CHANGED:12.336s##_##-
2023/08/06 16:34:11.6665##_##WARN:L1##_##displayfusion.exe:5740##_##BFMonitorEnumWin10:GetMonitorsRaw:119##_##-##_##[GetMonitorsUITHREADONLY:BFPublicData:BFPublicData:UpdateMonitorEnums:FormMain:WM_DEVICECHANGE:DBT_DEVNODES_CHANGED:12.336s:GetMonitors] Monitors have changed [NoPathCache], processing.##_##-
2023/08/06 16:34:12.5405##_##INFO:L1##_##displayfusion.exe:5740##_##BFMonitorEnum:UpdateMonitorsUITHREADONLY_NOLOCKS:223##_##-##_##[BFPublicData:UpdateMonitorEnums:FormMain:WM_DEVICECHANGE:DBT_DEVNODES_CHANGED:12.336s] Setting monitor caches.##_##-
2023/08/06 16:34:12.9275##_##WARN:L1##_##displayfusion.exe:5740##_##TaskbarManager:TaskbarRemoveAllTASKBARMANAGERTHREADONLY:2140##_##-##_##[TaskbarManager:ProcessTaskbars:NotEnabled:TaskbarManager:TimerUpdateCallback]: 1 monitor detected, waiting.##_##-

Running DisplayFusion 10.1 Beta 7 on Windows 11. Every 5 to 10 seconds, CPU spikes to 5% from DisplayFusion.exe and mouse becomes laggy for 1 second.

After disabling monitor update events the lag is gone. It should be noted that I have 4 monitors plugged in and my machine is set to "project to PC screen only" so only 1 monitor is active. Maybe the state of having 4 plugged in but only 1 active is triggering the updates. In any case it would be nice if maybe it detected that windows is sending so many errant monitor update events and did something to minimize the lag.

Aug 6, 2023 (modified Aug 6, 2023) • #1