The official backwards compatibility on a stock 360 can suffer from frame rate drops in Las Venturas. An RGH console allows you to adjust the emulator’s CPU slack and use a custom xbox.xex that forces the system to run the emulator at maximum clock speeds, eliminating lag.
Grand Theft Auto: San Andreas remains an undisputed masterpiece of open-world gaming. While the "Definitive Edition" received mixed reviews, many purists and modders still prefer the original Xbox 360 port or the emulated Original Xbox version—especially when running on an console. gta san andreas xbox 360 rgh new
Here is what a "New RGH" setup allows for San Andreas : The official backwards compatibility on a stock 360