Slow network with VMTool 8.6 for Windows

Hi,

I ran through a strange problem last days.

I've a VM (Windows 2008 R2 SP1) on a ESXi 5.0.0, 515841 host with VM Tools 8.6 installed (VM Version = 8).

When I copy multiple files from a network share to the local drive of the VM (D:\), it takes long time (aprox 12 sec for 50Mo/450 files).

If I uninstall VM Tools from the VM/Reboot and start the copy again it takes only 5 sec for the same folder to copy from network share to the VM !

Anyone encountred this problem ?