Emulator

Game Name?

Mario Party 5 (and probably others

Game ID? (right click the game in the game list, properties, info tab)

GP5E01

MD5 Hash? (right click the game in the game list, properties, info tab, MD5 Hash: Compute)

f30c185d209cc8af823282bfe2ae7c60

What's the problem? Describe what went wrong.

Dolphin is suffering steadily decreasing FPS, and increasing thread count. After an hour, I was getting single digit FPS, I had to press buttons several times to get them to register, and it kept freezing. "System Interrupts" was using 100% of one CPU, and Dolphin had 20,000 threads running. As soon as I closed dolphin, performance issues vanished.

What steps will reproduce the problem?

Run dolphin for about an hour in Mario Party 5. Probably other games as well.

Which versions of Dolphin did you test on? Does using an older version of Dolphin solve your issue? If yes, which versions of Dolphin used to work?

5.0-1327
5.0-4?? works correctly

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

https://pcpartpicker.com/user/Mikemk/saved/#view=QyKgXL
Latest drivers

Is there any other relevant information? (e.g. logs, screenshots,
configuration files)

no