GAMES:Ultima VII: The Black Gate
Ultima VII is playable through Exult, which may be preferable to emulating it in DOSBox.
When using dosbox, use dynamic core and a fixed speed of roughly 9000 to 11000 cycles. Disable ems and umb support (you can disable xms too if you like, the game needs no himem.sys emulation). Memsize should be at least 3.