Five 2012 instances on a 2-node cluster using AVGs. Two of them doing nothing yet, no user databases or users. Customer insists on specific max mem settings while waiting for additional memory approval. We lowered max mem from 1gb to 256mb on both and each instances CPU usage jumped to 20% and stayed there. Raising it to 512mb brought it back down to basically nothing. Regardless of mem setting each instances memory usage stayed right around 200mb.
Any ideas? I'm still doing research for the technical answer they are requesting.