в общем так. про счётчики ты наверно в курсе. можно тут прочитать, например -
https://www.itprotoday.com/email-and-calendaring/what-are-outlook-performance-counters-used. главный вопрос как их включить:
For the MSI version please start Outlook as admin once one the machine.
After that please open a cmd window and go to the c:\windws\system32 folder. In the folder run mmc.exe /32 perfmon.msc and confirm if the counters are there for MSI as well.
For C2R version:
1- Start Outlook as admin once so that all necessary files are copied to c:\windows\inf\Outlook and the counters are recorded in c:\windows\system32\perfc009.dat.
2- Export HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun\REGISTRY\MACHINE\SYSTEM\CurrentControlSet\Services\Outlook key and import it under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services so that you end up with something like that:
3- Register mso20Win32client.dll so that olmapi32.dll can find it when loaded in mmc.exe. Add the REG_SZ below manually for O16 x86 running on Windows x64: