Emulator

Game Name?

F-Zero X

Game ID? (right click the game in the game list, Properties, Info tab)

NAFE01

What's the problem? Describe what went wrong.

After selecting a track, you pick your car. When you pick your car, you'll get a several second long stutter. It will stutter if you go back and forth as well.

What steps will reproduce the problem?

Start up game, Select Grand Prix Mode, Select Track, Select Car.

Is the issue present in the latest development version? For future reference, please also write down the version number of the latest development version.

5.0-14007

Is the issue present in the latest stable version?

Unknown 5.0 won't work with my NAND. I tested back to 5.0-10658 and the issue existed

What are your PC specifications? (CPU, GPU, Operating System, more)

Core i7-6700K, GTX 1070, Windows 10

Is there anything else that can help developers narrow down the issue? (e.g. logs, screenshots,
configuration files, savefiles, savestates)

You can mostly fix the issue by "disable JIT Branch".

Leoetlino later identified that falling back "Jit64::bx" would also mostly fix the slowdown with less of a performance hit. Both caused a sizeable performance hit.