Windows Server 2016 Really slow on ESXI 6.5

Hi,

I have installed Windows Server 2016 on the latest version of ESXI 6.5.0b but it's almost unusable.

The VM has 2 CPU and 2GB of RAM with VMware Tools 10.1.5 (5055683) and is used for Active Directory for my lab but it's really slow.

For example for open DNS I take almost 10 secs.

On ESXI I get High VM Memory Usage alarm but if I check on task manager on the guest vm ram usage is always around 40% and CPU is around 3 4% max and even if I put 4 gb the problem is still there.

Is this a know problem or there's something that I can do to slove this problem beside downgrade to Windows Server 2012 R2?

My Host ESXI specs are:

Asus X99WS-IPMI

I7-6800K

128GB RAM DDR4

1x SSD 250GB + 4xSSD 500GB on LSI 9260-4i on RAID 0

ESXI Booted from USB Stick

Thanks

Marko