I updated to photos yesterday, and have been seeing some ridiculous cpu numbers, and my macbook pro running really really hot. when photos is open i see cpu usage of 150% by photos, and another 20-30% by a photoslibrary process. photos already migrated my iphotos library when i first started it. i see all my pictures in photos. I don't have icloud photo sync turned on (photostream is on though). First i thought maybe its because its downloading my photostream pictures, but the thing is i see no network activity. so its already downloaded photstreams. Is photos just a really cpu intensive app and thats why im seeing this huge cpu usage? or is there something going on in the background on the first few runs thats causing high cpu usage?