Those are great. You should also try cartographers map markers. Its one of my favorites. It just adds markers for all the businesses and homes in skyrim and alot of other places that didn't have their own separate markers before. You still have to discover the locations like normal. My frames are dropping to 20 from time to time, kindof randomly. It doesn't seem to matter where I am, but sometimes it will just drop from being pegged at 60, to 20 for like 5-10 minutes. Then it'll suddenly pop back. I don't think it's a mod.