Can you try on 1 of your problem servers the 3 commands:
Rebuilding the counters:
cd c:\windows\system32
lodctr /R
cd c:\windows\sysWOW64
lodctr /R
Resyncing the counters with Windows Management Instrumentation (WMI):
WINMGMT.EXE /RESYNCPERF
And reboot the server to activate all.