Random Roms Running Slowly

[jplaj]

Since the new installation came out, I’ve noticed that a few roms don’t run quite right. Mostly Mario roms (NES and SNES), but also Kirby’s Adventure and Mega Man 3. They run slowly, like the game takes place in a thick, cheese soup.

Other roms run fine.

Any clue why?

[gizmo98]

I have the same problem since one month. Retroarch runs slower with threaded video. Seems to be a library problem. If i use older userland libs (https://github.com/raspberrypi/userland/) threaded video is faster and there is no audio stuttering.

If i checkout the following commit everything runs as expected:
https://github.com/raspberrypi/userland/commit/5e67fb321c0ec308e6cffc4f2ef1668fcc8e9250

1. delete or rename directory /opt/vc
2. install old userland libs

export CFLAGS=" -march=armv6j -mfloat-abi=hard -mfpu=vfp -O2"
git clone --depth=0 git://raspberrypi/userland.git
cd userland
git checkout c5749b99f2
sudo ./buildme

Be aware that rpi-update overwrites /opt/vc

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