No luck. The profiles were already in there.
Troubleshooting included downgrading Photoshop 1 version, verifying I have ACR 10.3 installed, toggling GPU on/off in ACR, trying 1GB and 10GB cache in ACR, creating a new Windows profile and testing Photoshop in that.
All results are the same. My official time for opening images in Photoshop from ACR is 12 seconds. It might not seem like much, but when it used to be 5 or less seconds, it is massive. Plus if you have a ton of images this becomes a big issue.
Any help will be appreciated.