MAMEWorld Forums - EmuChat - Re: Performance Regression

> but if I run one of the clones of Area 51. Zero Issues. Runs without a hitch.

Likely means that the config files from older version of MAME were not deleted first before running newer version release of MAME because it appears that an alternate clone version of Area 51 had not yet been run before which means the parent romset’s old config files are still there in the folder and must be deleted first before running the newer release of MAME.

—
Jaguar.cpp

https://github.com/mamedev/mame/blob/master/src/mame/atari/jaguar.cpp

https://github.com/mamedev/mame/blob/d87...aguar.cpp#L2648
—

>> for games like Area 51, Cruisin USA, SFRush etc

> those drivers (seattle and midvunit)

After all the old config files are removed, then test the other games to see what happens.