Install the WPT and run this command: xperf -on PROC_THREAD+LOADER+CSwitch+DISPATCHER+DISK_IO+DISK_IO_INIT+FILENAME+FILE_IO+FOOTPRINT+VIRT_ALLOC+MEMINFO+VAMAP+REFSET+MEMINFO_WS+PROFILE -stackwalk CSwitch+ReadyThread+FileCreate+FileCleanup+FileClose+FileRead+FileWrite+FileSetInformation+FileDelete+FileRename+DiskReadInit+DiskWriteInit+DiskFlushInit+VirtualAlloc+VirtualFree+PROFILE -buffersize 4096 -MaxFile 2048 -FileMode Circular && timeout -1 && xperf -d C:\temp\diagslowWindows.etl capture a 30-60s of the slowness, press a key to stop the logging. compress the ETL file (to reduce the size), upload the zip (OneDrive, dropbox) and send me a link via PM.