Performance Problem Pi 2.0! Need Help!

[x52p]

I have big performance Problems with my Raspberry Pi 2.0
Using retropie v3.0 (sd image)

i have connected:
usb controller and wireless keyboard

SNES games run poorly with bad sound and low fps (for example Mario, super metroid, F zero)

I don´t understand that because I saw a lot of videos of people running even starfox or n64 games fluidly

I´ve already set the clock to the raspi 2 setting, everything else is left default.

I´m new to RetroPie and hope someone can help me.

[denus]

Don’t use the predefined setting from the raspi-config: the frequency for the sdram is set too high (500) and can cause instability, freezes etc.
Rather use these values in your ~/boot/config.txt:

arm_freq=1067
over_voltage=4
core_freq=533
sdram_freq=466

These are in my case the fastest and most stable settings so far, without extreme temperatures or other drawbacks!
Of course, there’re more settings possible, but I can play PSX games the whole day without problems, so I’ll stick with it.
You should consider buying a couple of heat-sinks though.

As for the HDMI sound, I cannot help you since I’m using the 3.5mm audio output.

[x52p]

I changed the settings in the file.
But i still have the same problem. Many games run at low fps, i deaktivated sound in retroarch to test if its a sound traiber problem, but that changed nothing.

Are there any retroarch settings wich should be changed?
Minecraft or other ports run without problems, i think its a problem of the emulation.

[denus]

Have you done an update /upgrade / rpi-update already?

Because I did nothing special, and everything is running fine, except for the N64 emulator, but that’s a known issue.

I just use the predefined emulators, didn’t change much except for the controls & smooth video.

[smithers]

Hi.

Sounds to me like it might be a power supply issue. As a test, open a SNES ROM and start playing. When the slowdown occurs, is there a square rainbow icon in the top right corner of the screen fading in and out? If so then try a higher rated power supply and the issue will (probably) disappear.

I was pulling my hair out trying to get to the bottom of why all SNES roms and certain MAME ROMs (MK2 / UMK3 mainly) were suddenly running like crap, then I noticed the slowdown only occurred when the rainbow icon appeared. I had recently changed to a different power supply so I changed back to the old one again and performance suddenly became perfect! (And no rainbow icon!).

Hope this helps!

Cheers
Steve

[denus]

That’s a good one… a good 2 amp power supply is indeed most important!

[kitchuk]

[quote=98030]Hi.

Sounds to me like it might be a power supply issue. As a test, open a SNES ROM and start playing. When the slowdown occurs, is there a square rainbow icon in the top right corner of the screen fading in and out? If so then try a higher rated power supply and the issue will (probably) disappear.

I was pulling my hair out trying to get to the bottom of why all SNES roms and certain MAME ROMs (MK2 / UMK3 mainly) were suddenly running like crap, then I noticed the slowdown only occurred when the rainbow icon appeared. I had recently changed to a different power supply so I changed back to the old one again and performance suddenly became perfect! (And no rainbow icon!).

Hope this helps!

Cheers
Steve

[/quote]

Out of interest, which mame emulator are you using to play MK2 and UMK3?

[smithers]

I’m using the libretro mame port that is included in retroarch. MAME4ALL won’t play them at all (Segmentation error).

They play pretty well, just a couple of sound issues at times but I haven’t tried changing the sound driver yet to see if it helps. They run terrible though with an under performing power supply!

See video below of them in action:

youtube

Cheers
Steve

[kitchuk]

Thanks for the reply. The Libretro MAME port doesnt seem to be included with RetroPie, I just have the imame4all core.

I’ll give it a spin after work. Cheers.

[smithers]

Hmmm, what version of Retropie are you running? I’m using v3b2 and I definitely have both versions (and advmame too which also opens them if I remember rightly but plays terrible).

[kitchuk]

Also running v3b2. I have the imame4all-pi standalone, libretro-imame4all core and then two standalone versions of Advancemame (.94 and .106 versions).

[x52p]

I found the problem,
it was a dammaged power strip!
Tanks alot for the tips!

[labelwhore]

[quote=98047]That’s a good one… a good 2 amp power supply is indeed most important!

[/quote]
…and just because it says 2 amps on it, doesn’t mean it actually outputs 2 amps. Don’t buy a cheap power supply. I saw this first hand with a power supply that came in a RPI 2 kit from microcenter.

[Author]

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