I use a Netgear R7000 router, dual core 1ghz, flashed with an Asus Merlin firmware and whilst the UI is nice i have to use the Eddie client for my downloads and maximum throughout of around 75mbits/s as the router can't sustain that speed.
I am amazed that the Linksys WRT1900ACS had been able to perform so well with AirVPN and encryption. As that router is still ARM based and so didn't support any AES instructions I assumed that a pfsense x86 box was my only real hardware choice.
I didn't really want another box as i would have still needed the router as a WiFi connection and pfsense can be kinda picky as well as my brain is a little feeble to configure it optimally.
I wonder if the Llinksys WRT3200ACM would perform as well as the other 1900ACS with its dual core 1.8ghz ARM processor..?
Reading up about the newer 3200 and it seems that at the moment it is a very mixed bag in terms of DD-WRT support and is best avoided.
Still it would be good to know what sort of CPU load it places on the 1900ACS when downloading at the speeds noted in this thread.
Please accept my apologies for taking so long to reply. I've been at work and that took up my time.
I'll start off by saying that I did own a Linksys 3200 initially but I could only get the router to work with a wired connection. The wifi did not work at all, so I sent the router back to Mr Amazon.
In your edit you asked about "Still it would be good to know what sort of CPU load it places on the 1900ACS when downloading at the speeds noted in this thread."
I will be honest and say that I do not know anything about this, how to check or how to test.
However I am more than willing to do these tests with my Linksys 1900ACS. Please let me know how to go about the tests and where to find the results?