Parallel w/angrylion - slowdown in games running at 60VI/s

Libretro Cores
#1

I’ve noticed when playing games such as World Driver Championship and Conker’s Bad Fur Day that there will be slowdown in places that shouldn’t have any on native hardware, even when the emulator is running at 60VI/s, when using the default core option “original”.

In Conker’s Bad Fur Day the opening cutscene with the n64 logo will have a lot of slowdown. Likewise, when starting a race in World Driver Championship on the Hawaii track, there will be lots of slowdown that doesn’t happen, either on an original n64 or on other emulators that use angrylion such as mupen or pj64.

Setting the core option to “fullspeed” fixes these slowdowns.

I found it interesting that it doesn’t happen in stand alone mupen because isn’t that what parallel is based on?

Maybe this is the intended behavior? I’m using an 8700k.

#3

Sounds like standalone mupen has that “fullspeed” option enabled.

#4

How is it working though? In this post https://www.libretro.com/index.php/parallel-n64-with-multithreaded-angrylion-released/ it says that it is to bump it up to 60 VI/s. However, in those instances I mentioned, the games were already running at 60 VI/s, they just had added slowdown that’s not supposed to be there.

There doesn’t seem to be any performance difference when running the fullspeed option in games that aren’t able to run at 60 VI/s like Pilotwings 64 so is there any disadvantage to just leaving it on?