Since I updated both my iMac (late 2012) and my Macbook Air (2012) to Mavericks without wiping my disks, screen sharing from one to another is very slow on the initial connection. When wife is working on iMac, and I am on MBA, I use command+K to connect to the iMac. The first time I do this (in a period of 30 minutes or so) is very slow, and can take up to 20 seconds before I see her screen. When I exit SS and re-enter this takes less than a second. When both the computers had ML, this was no issue as the initial connection was also less than a second. We are on the same network. Any way to speed this up?