Deathsmiles on lr-mame2015 : Any performance tips?
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Hi all,
I am running Deathsmiles on lr-mame2015 and it isn't far away from being playable. The audio is a bit choppy but it is quite near to where I could play it fairly happily. I just wondered if anyone had any tips to get slightly better performance from the emulator. I can make it worse by messing about with the settings, but am I yet to make it better!
I am keen to play this at a decent performance level as it seems a great game from the amount I have tolerated so far! I am running this on a Pi 4, overclocked (if that even makes any difference).
Thanks so much,
Adam -
https://retropie.org.uk/forum/topic/26628/audio-issues-after-latest-raspbian-updates
Try this to fix your audio issues. -
@Unknown said in Deathsmiles on lr-mame2015 : Any performance tips?:
Try this to fix your audio issues.
This topic is not about audio issues. Choppy sound is usually a sign that emulation is not full speed and the system doesn't have enough power to run the game. The topic you linked is for another issue.
I'd recommend, as a beginner with RetroPie and the forums, to try and give advice on the things you have experience first hand and don't suggest loosely related topics/links/info. Bad advice is worse than no advice at all.
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@mitu Yeah, I'd say you are correct here. Most games are absolutely fine - it is just that this game requires a bit more performance than most. I just wondered if there were any tips to reduce the quality of the video or audio in order to get this game running slightly better.
@Unknown Thanks for the advice anyway, of course!
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@AdamBeGood you could try running it at a lower resolution via runcommand (make sure it is a 60hz mode). you could also see if any core options are available to reduce the sampling frequency: https://github.com/RetroPie/RetroPie-Setup/wiki/RetroArch-Core-Options#setting-core-options (although i would set it for that game, rather than the whole core)
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@dankcushions Already running it at a lower resolution, but I'll double check the 60Hz point.
I'll have a look at the sampling frequency.
Thank you - you are so helpful (and tolerant AF, looking at other posts).
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@AdamBeGood i believe there is a way to downclock the emulated cpu in mame (through mame osd ?), cv1k games might be somehow playable with a mix of that and heavy pi4 cpu overclocking.
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@barbudreadmon When you say osd do you mean the option screen within Mame itself? Accessed by pressing Tab usually, I think that is the case for lr-mame2015 anyway.
I'll have a look at this tomorrow. Thank you!
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These settings in Latency make things much better. It is playable now!
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@AdamBeGood The pi4 is just too slow. Those settings don't do much. The few times I played it I got around the same fps. I did notice with your settings the audio will mute itself at the lowest frame drops which makes it just as annoying to play. I don't believe hard gpu sync does anything.
@barbudreadmon There are no mame settings (in retroarch or mame tab menu) to adjust stuff like emulated cpu.
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@Darksavior hmmm maybe I am less fussy, but I find it absolutely playable
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@Darksavior said in Deathsmiles on lr-mame2015 : Any performance tips?:
There are no mame settings (in retroarch or mame tab menu) to adjust stuff like emulated cpu.
Are you sure there is nothing in mame osd called "Slider Controls" ? Something to change cpu clock should be in there
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@barbudreadmon There is a section called slider controls, but it's nothing but screen, volume adjustments, and "blitter delay" at 50%. Nothing about cpu clocks unless that's it?
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@Darksavior after some search, i found the topic talking about that cpu clock feature on cv1k games : https://neo-source.com/index.php?topic=3510.msg27700#msg27700
PS : i don't know much beside that since i'm not a mame user myself, but i found some reference on internet about that feature being in "Slider Controls"
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@barbudreadmon Good read, unfortunately, mame2015/2016 does not have any cpu underclocking options. I don't know anything of compiling. Maybe it's a feature that needs to be enabled?
This guy says that mame2014 has speedhacks? Though that core is dead and gone. He mentions this on his youtube channel:
"It is indeed from february 2015, but it only uses the updated cv1000 drivers from 2015, while the speed hacks are from 2014. It was speciffically made for android and cv1000 by some of the russian devs of demul i think. It was never part of the official Retroarch repository. It also slightly violates the mame rules in the audio coding as i understand from Haze (mame dev), but all in all this is the fastest ever made for Cave shmups. Just compare the same game in both this core and the mame2015 core from official Retroarch and you'll see how much smoother this one is."
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@Darksavior well, the youtube video is titled "Retroarch Mame2015 core (cpu 38 %)", the op on fbneo's forum also mentions that the mame2014 core doesn't show the numbers on the underclocking bar while the mame2015 core does, so my guess is that it's clearly possible to downclock cpu on mame2015
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Listed in MAME 2015 Slider Menu as "Overclock CPU maincpu". Can lower. In the screenshot, don't let the 56.15 fool you. I had just exited the static screens when I took the shot. Gameplay is about 40-45FPS depending on scene (Pi4B OC 2,000 CPU/ 750 GPU).
Using MAME 2015 (0.160 e1362ea)
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@roslof Fairly sure that option isn't in whichever version I am running...
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@AdamBeGood my version was installed via RetroPie binary in April after RetroPie 4.6 was released.
Still, the performance boost noted in the video (for Android) isn't as great on the Pi4B. Might not be worth investing much time.
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I just tried the game on my odroid n2 with lr-mame2016 (yes, 2016, i don't have 2015 on my setup), the option is there (tab menu > slider controls), and the game runs at full speed with some ~59fps slowdown (i'm not hearing any stutter though) after setting the cpu to 38%. I guess even after overclocking the pi4 to 2Ghz, there might still be a big gap with odroid n2's a73@1.8Ghz cpu
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