PSP games not really playable

[Loirt]

Hi Everyone,

I have build my own arcade cabinet and I'm using Retropie with a Raspberry 3B for playing games.
Last week I put my all time favorite PSP game "Virtua Tennis 3" on the SD card, but it is barely playable.

I have looked on the internet and played with the PPSSPP settings to get better performance.
On different forums I read that this game should perform good on a Raspberry 3B.
For me the menu's etc. are very smooth, but when I really start playing I will have about 10 to 15 fps and the sound is not smooth.
What settings are required in order to make it more playable?

Pi Model or other hardware: Raspberry Pi 3B
Power Supply used: 3.0A
RetroPie Version Used (eg 3.6, 3.8.1, 4.1 - do not write latest): 4.5.1
Built From: Pre made SD Image on RetroPie website
USB Devices connected: 2x buttons and joysticks for 2 player arcade cabinet and usb keyboard
Controller used: Butoons and joystick
Error messages received: -
Log found in /dev/shm/runcommand.log (if relevant): -
Guide used: Multiple PSP performance guides
File: -
Emulator: PPSSPP

I have overclocked my PI as well, these are my settings:

rm_freq=1400
over_voltage=6
temp_limit=80
core_freq=550

#GPU Based
h264_freq=333
avoid_pwm_pll=1
gpu_mem_256=128
gpu_mem_512=256
gpu_mem_1024=512
v3d_freq=550
gpu_freq=550

#Ram Overclock
sdram_freq=588
sdram_schmoo=0x02000020
over_voltage_sdram_p=6
over_voltage_sdram_i=4
over_voltage_sdram_c=4

I have heatsinks and a case fan. All other games (N64, etc.) run very well and without any issues.

Hopefully you can help me with my PPSSPP settings to make some of my PSP game running well!

[shavecat]

@Loirt
Really N64 ?
u got killer instinct and GoldenEye 007 ruining well ???

[Loirt]

@shavecat I have never tried those two games. But I noticed big performance boost after I overclocked my PI. I have GoldenEye installed, but never played jet. Maybe I will try it today and let you know.