Konami planned a big push for their Silent Hill series with the release of 3 Silent Hill games (Downpour, HD Collection, Book of Memories) in the same month. Unfortunately, everything didn't go as well as planned, with Book of Memories' release getting pushed back and numerous technical issues being reported on Downpour and the HD Collection.
Thankfully, it looks like things will be all fixed up shortly, as Konami has just announced that they are working on patches for both Silent Hill Downpour and HD Collection:
"KONAMI ANNOUNCES UPCOMING PATCHES FOR SILENT HILL DOWNPOUR AND HD COLLECTION
New online patch will correct frame rate and audio synch issues
Today, Konami Digital Entertainment, Inc. announced that online patches for both Silent Hill Downpour and Silent Hill HD Collection are currently in development and will be released soon.
Understanding the issues some users are experiencing, development teams are currently creating online patches for both games, which will fix the frame rate issues, the audio-synching in Silent Hill HD Collection, and the Auto-Save issues in Silent Hill Downpour. Players have voiced their concerns, and solutions to these issues will be fixed and launched in the coming weeks.
Patches for Silent Hill Downpour and Silent Hill HD Collection will be made available on both XBOX®Live Arcade and PlayStation®Network. Both Silent Hill Downpour and Silent Hill HD Collection are available at retail stores nationwide."