Quote: "Then I do that object not cross through map, fps rate fall from 40 to 15."
You might be using a really inefficient way of doing it then
But you haven't really included a lot of detail in your post, so it's hard to tell.
Taking you're using DBPro, I would strongly suggest that you use Sparky's collision DLL, it's great and fast(and free). The download is located here(take the DLL download):
http://forum.thegamecreators.com/?m=forum_view&t=74762&b=5
If you have any further questions fell free to ask more of course, and please remember to include as much detail as you can. When you've downloaded the plugin you should take a look at the help files and the following examples.