labelwhoreParticipant01/24/2016 at 19:20Post count: 526
I’ve been doing a bunch of testing on PPSSPP. It looks like only about 30% of games work at all, and the ones that do can be pretty slow. But there is something you can do.
Disclaimer: My testing has been almost entirely subjective, except for some initial fooling around with the FPS meter to determine some good general settings. Your results may vary. I’ve got a Pi 2 with the 3.3 Jessie image.
First, when you start a game, turn off autosave. Saving seems to slow games down, sometimes quite a bit. So leaving autosave off seems to help with speed issues.
OVERCLOCK aka. Warranty be Damned!
Next, a healthy overclock. (I’m using the word “healthy” liberally here, this will probably void any warranty that you might have on the pi.) This is beyond what the default overclock settings will allow. Seriously, don’t do this unless you have a heatsink with a fan plus a really good power supply. (Read: Tested and know that it provides a clean 2 Amps.) At the end of boot/config.txt, I changed what was there to this:
gpu_mem_256=128 gpu_mem_512=256 gpu_mem_1024=384 gpu_mem=384 arm_freq=1100 core_freq=550 sdram_freq=500 over_voltage=4 force_turbo=1 avoid_pwm_pll=1 v3d_freq=450
I got these settings from a post on the official Raspberry Pi forums talking about overclocking. Apparently, they’re about the highest (on average) that can be used relatively safely, without extensive hardware mods.
Quick tip to make this process easier.
1. Launch PPSSPP then hit Esc
2. go to settings > controls
3. assign new pause menu button to an unused button on your controller
This does two things; makes the config setup process easier, and will allow you to exit games without a keyboard. On my xbox360 controller, I used the right thumb button. (No more need for lr-PPSSPP.)
Now to the good stuff…
This seems to have helped quite a bit. Especially for games that were just barely too slow or had choppy audio. But the next part seems to have much more dramatic effects from game to game, and is less risky to your hardware for obvious reasons.
Create config files per game in PPSSPP. I haven’t used the libretro version out of performance concerns, but the standalone version allows you create configs for each game via the “pause menu” (hit esc).
Before creating your first config file, lets make some changes to the default settings to get a good starting point for all games, you can tweak each one from there to get better performance.
To start change the audio settings. These will stay the same for every game, and make a very noticeable difference in audio, as well as overall performance.
Audio Latency = high Audio Sync = off Sound Speed Hack = on
Next start with these settings for every game. (Leave what’s not mentioned here at their default settings.)
Mode = buffered rendering Simulate block transfer effects = off frameskip = 1 Auto frameskip = on Prevent fps from exceeding 60 = on Rendering resolution 1xPSP Lazy Texture Caching = on Retain changed texture = off disable slower effects = off spline/Bezier quality = med Antiscopic filtering = off texture coord speedhack = on timer hack = on
The changes above that make the most difference are the Antiscopic filtering, and the settings the mention speed or performance in the UI. Turning Antiscopic filtering off completely will cause more jagged edges and tearing, but it by far seemed to make the largest difference to performance. My interest was getting the games to run, then tweaking them from there, so moving on…
Tweak Settings for Individual Games
Once you have the above default settings, you can start launching games and testing their performance. Some games perform really well and can get some upgrades, more about that later. For now, what about the games that still don’t perform well?
First, create a config file for your game from the PPSSPP pause menu. Then open the settings menu and open the graphics tab. These changes will be saved automagically. :P
For games with 2D sprites like fighting games, try this:
Retain Changed Texture = on
While it makes most games slower, certain types of games get a performance boost.
For 3D games try:
Mode = unbuffered
This will make some games crap out completely, graphically. But others get a performance boost.
If you’re still having speed issues try:
spline/Bezier quality = low
As a last resort, (this will give folks reliant on perfect performance nightmares) if you don’t mind lower fps in favor of getting to play a game at all. Try this:
Frameskip = 2
or even “ugh!”:
Framskip = 3
Try that in conjunction with the “mode” and/or the “auto frameskip” settings.
Games that run well
Most games will skip and stutter on the pi, for now we’ll just have to deal with that with PSP games. But still, and handful of games run nearly perfectly. For these games you can try a few things to squeeze better graphics out of the game.
Change mode to buffered rendering first, then you can change
Rendering Resolution > 1xPSP
I find up to about 3xPSP works fairly well for some games, and looks great.
Next, try increasing the Spline/Bezier quality.
Finally, if the game is still performing great, try enabling/increasing Antiscopic filtering.
Repeat this for every game. Good luck and high scores! lolrookervikParticipant01/25/2016 at 18:21Post count: 109
Great list! I will try these settings out later on. I have had the same issues with lr-ppsspp. It’s completely useless. Tho I have better results in PPSSPP. I’ve had many games run at full speed at 1080p. Hotshots Golf, for one, runs wonderful even at 1080p. A little stuttering in places, but overall a great experience. Hopefully I can get the controller working as well as you have.labelwhoreParticipant01/26/2016 at 03:37Post count: 526
I think I tried one game in PPSSPP and game up on that one. Performance on the libretro version is hopeless at best. loldankcushionsParticipant01/26/2016 at 12:20Post count: 432
if the libretro version is slower you should add a comment to this issue: https://github.com/libretro/libretro-ppsspp/issues/12
it must be some relatively simple config issue, but it won’t get fixed unless we raise it :)zerojayParticipant01/26/2016 at 14:37Post count: 173
Extremely few games use splines or Bezier curves, so the recommendation to use “spline/Bezier quality = low” isn’t really worthwhile. About the only game I can think of that uses them are the Loco Roco games and they play fast enough with them set to defaults. Setting it to low won’t give them a speedup and will just make the game look horrific as almost everything is rendered with Bezier curves.labelwhoreParticipant01/26/2016 at 14:42Post count: 526
yep, that’s why I mostly left it at med. I didn’t notice much difference. The only time I changed it any lower is when the game already was running pretty poorly, which as you know is the case with a lot of games.labelwhoreParticipant01/26/2016 at 14:44Post count: 526
I haven’t been able to get hotshots to work, that’s one of my favorite series. The game would crap out when I went to swing.robertybobParticipant01/26/2016 at 18:03Post count: 219
Slightly relevant – does anyone have a PPSSPP config file for an Xbox 360 controller? For whatever reason it doesn’t let me configure more than 2 buttons before becoming unresponsive.
I’ve tried lr-PPSSPP, but as others have commented it doesn’t run anywhere near as well.labelwhoreParticipant01/26/2016 at 19:08Post count: 526
I should, do you know where it’s stored? I can post it for you once I get home from work tonight.labelwhoreParticipant01/27/2016 at 00:20Post count: 526
here’s the contents of my /opt/retropie/configs/psp/PSP/SYSTEM/controls.ini
[ControlMapping] Up = 1-19,10-4033 Down = 1-20,10-4032 Left = 1-21,10-4031 Right = 1-22,10-4030 Circle = 1-52,10-189 Cross = 1-54,10-188 Square = 1-29,10-190 Triangle = 1-47,10-191 Start = 1-62,10-197 Select = 1-66,10-196 L = 1-45,10-192 R = 1-51,10-193 An.Up = 1-37,10-4003 An.Down = 1-39,10-4002 An.Left = 1-38,10-4001 An.Right = 1-40,10-4000 Analog limiter = 1-60 RapidFire = 1-59 Unthrottle = 1-61 SpeedToggle = 1-68 Pause = 1-111,10-200 Rewind = 1-67 DevMenu = 10-198
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