Enabling WCCP and traffic flowing, increased CPU 10% with one site only.

Hello,
We are deploying a WAAS solution for a customer Datacenter and we are doing a pilot on WCCP redirection towards few 7341 WAAS boxes on the DC.
The redirecting platform is a couple of 7200's running 12.4(13) version - we are using WCCP GRE negotiated return and ingress with hash assignment.
for the moment we enabled one remote site with an inline WAE and are optimizing traffic across that connection. All remote sites except this one are being filtered out by the WCCP redirect-list.
At this moment we are a bit concerned due to two things:
- when traffic started being redirected on the 7200, (about 1,5 Mbps in/out for the pilot site= allowed traffic on redirected list), we saw a 10% CPU increase on the 7200. Having in mind that the redirecting list is denying a lot of traffic, I'm considering it to also add CPU% overhead to the processor usage.
The first question is - Does anybody have any experience on how can we expect the CPU to grow, while adding more sites? We can grow up to (theoretically) 1Gbps of traffic coming from remote sites.
The second question is - we have 4 x 7341 on the DC, but we are seeing quite uneven load distribution on them. We are using service 61 in on the LAN interface and service 62 in on WAN interface. From what I can gather the hashing across boxes is then made based on the LAN side IP address (that is the servers).
Would it be recommended to swap both services between interfaces (61 on WAN and 62 on LAN) so that the hashing is based on the WAN side IP address? what would be the downside of this?
I saw that from version 12.4(20)T on, software based platforms support L2 redirect and mask assignment. Would that be a recommended upgrade to make in order to easen up the CPU load on the 7200? Does anybody have any experience on WCCP with this particular config on 7200?
Thanks for any input!
Gustavo Novais

An alternative to using the "Lookup" functionality in Network Utility is to run "nslookup" from the command prompt (or the shell prompt) using Terminal. Both the Network Utility and Terminal are found in the Utilities folder under Application.
While in Terminal, enter this:
nslookup statcounter.com
It should return something like this:
Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup with
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Server: 68.87.69.146
Address: 68.87.69.146#53
Non-authoritative answer:
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Address: 66.98.186.36
Name: statcounter.com
Address: 66.98.134.100
The first portion of the output indicates the IP address of your DNS. The second portion indicates the IP address of statcounter.com.
You can also run "dig statcounter" while in Terminal. This provides the same output as the "Lookup" functionality in Network Utility.
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Software Update are not deployed to a user they are deploied to a PC.
Start with the basic.
Have you check WMI health?
What OS are you talking about?
Have you applied all the WMI Software Updates to the PC?
Are you sure that he doesn't have roaming profile?
What happens when he logon to your healthy PC? Does the problem start? If so what then this is clearly NOT a CM12 problem but instead, a profile or application target to him that is the problem.
What GPO are target to him?
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Enabling WCCP and traffic flowing, increased CPU 10% with one site only.

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