Limit 60fps games to 30fps

[Rotkaeqpchen]

Hi there,

I am new to the board and couldn't find any specific post about that.

I am running PPSSPP on the SHIELD TABLET.

I'd like to make 60fps games run at 30fps, it somehow worked intetionally with Colin McRae Rally but I don't know how it happened. It now just works for this particular game and only if I load my savestate.

Any suggesion would be highly appreciated!

Thanks

[ZhuraYuk]

You can try to limit CPU speed in settings, however this is not fancy way and may be tricky for some games. I am joining to request also. We need some universal trigger if it's exist.

[cybercjt]

Frameskip 1, Auto Frameskip off :/

60 down to 30

30 down to 15

Halves the FPS on 60/30 FPS games but still 100% running (depends on device if it can run games at lock 60/30 FPS)

[Rotkaeqpchen]

Thanks für that suggestion, but that means that it SKIPS 1 frame, ... but I want the game to run at "fullspeed" 30fps. Do you know what I mean?

[Henrik]

If a game runs natively at 60 fps, and you set frameskip to 1, you will end up with it running at 30 fps but at the correct speed, which is what you are asking for.

[Rotkaeqpchen]

Hi,

well I guess I don't know how this FPS thing works exactly. But as I understand, there are certain games that run natively @ 60fps AND 30fps depending on the original PSPs hardware, correct me if I'm wrong.

My goal is to make games like ColinMcRae Rally run smoothly at 100%@30fps instead of 60%@60fps.

[cybercjt]

Frameskip 1 halves the maximum FPS a certain game can attain but the emulation is still 100%

60 FPS / with Frameskip 1 30 FPS and still run at 100%

30 FPS / with Frameskip 1 15 FPS and still run at 100%

[vitality19]

(09-10-2014 01:31 PM)Rotkaeqpchen Wrote:  My goal is to make games like ColinMcRae Rally run smoothly at 100%@30fps instead of 60%@60fps.

Edit ppsspp.ini - ForceMaxEmulatedFPS = 30 but don't enter settings in PPSSPP menu otherwise it will reset to 60, you can also decrease psp cpu clock (as was mentioned above) to 30-50-70 resulting in lowering the emulated FPS by the psp cpu

[tintinmayo]

(09-10-2014 01:31 PM)Rotkaeqpchen Wrote:  Hi,

well I guess I don't know how this FPS thing works exactly. But as I understand, there are certain games that run natively @ 60fps AND 30fps depending on the original PSPs hardware, correct me if I'm wrong.

My goal is to make games like ColinMcRae Rally run smoothly at 100%@30fps instead of 60%@60fps.

The explanation people gave above is as simple as it gets - if a game runs at 60 fps and it gets cut down to 30 fps, it has to either

a.) skip rendering half of them (in order to maintain 100% speed) or
b.) slow down the timing to 50% speed (to ensure that only 30 frames are rendered in a second), which results in slow motion. This is what setting ForceMaxEmulatedFPS to 30 will get you. Slow motion gameplay.

There are games on the PSP that can run at 60FPS and 30FPS depending on the what the CPU speed is set to. But the game has to be coded that way. Only game I remember that does that is Gran Turismo Portable. Besides, what the game does is basically the same as turning on frameskip.

[vitality19]

(09-10-2014 11:31 PM)tintinmayo Wrote:  Slow motion gameplay.

Slow motion in Fightings primarily, for example NFS series uses 30 fps, so why should one racing game use 60 - to make it special ?
And besides frameskip 1 will make the game a bit jerkier (not so smooth as it was, as every second frame is skipped)

I wish this option force max emulated fps was in the settings for convenience