I just browsed through the game compatibility database, and I see that there's a lot of entries in there which should be fixed: People mark a game as "broken", however, they add a comment stating "This game runs slowly and is thus unplayable" (Logical) Games marked as "broken" in 0.58, however, …

This is because of a bug/unsupported feature in dosbox's DPMI implementation. [For the technically interested: DPMI function 0008 (Set Segment Limit) is called with an invalid segment value >0xffff, which is not allowed in 16bit mode. Afterwards, the CPU paging goes down the drain because of an …