High CPU Contention issue

I have an issue with high CPU Contention which sometimes averages above 10% for a good portion of the day but I cannot seem to get it down below 5%.

Here's the basic setup, it runs on ESXi 6.0.0 build 3568940.

Here is what is on each of the two hosts:

Here is CPU Contention according to vRealize for today:

Now according to me, i have plenty of free pCPU's to account for scheduling of all my vCPU's so in theory I should not be experiencing this much CPU Contention. I do have two other clusters that work harder than this one and they rarely spike above 2.5%. Anything else i need to look into?