GBA emulator slow on RaspberryZero W

[Nicola Silveri]

Hi I have this modded GBA SP with Raspberry Zero and SPI screen Waveshare 3.2 320x240 LCD (C)

when i use GBA roms the games are very slow
i put here my config.txt if someone can help me

CONFIG.TXT

---

# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1
 
disable_overscan=1
 
# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=1
 
# Sound output. Set to 0 or comment for autodetect, 1 for DVI, 2 to force HDMI.
#hdmi_drive=2
 
# Using /etc/modules is deprecated and no longer supported on 4.4 kernel
# So manually enable audio
dtparam=audio=on
 
config_hdmi_boost=0
 
# force hdmi while the tv can take time before sending the signal on the hdmi output
hdmi_force_hotplug=1
 
# uncomment for composite PAL
#sdtv_mode=2
 
# uncomment for lirc-rpi
#dtoverlay=lirc-rpi
 
# if you plug your tv at the same time as your rpi and that the rpi switches from the hdmi or give a low resolution because tv had no enough time to initialize it
boot_delay=3
 
# uncomment if you don't want the rainbow at startup
disable_splash=1
 
# default CEC name
cec_osd_name=recalbox
 
# Overclock
gpu_mem_256=128
gpu_mem_512=256
gpu_mem_1024=448
 
avoid_safe_mode=1
 
kernel=zImage
 
# Raise the first security limit up to 70° instead of 60°
temp_soft_limit=70
 
#dtoverlay=gpio-key,gpio=21,keycode=108,label="KEY_DOWN"
#dtoverlay=gpio-key,gpio=12,keycode=103,label="KEY_UP"
#dtoverlay=gpio-key,gpio=6,keycode=105,label="KEY_LEFT"
#dtoverlay=gpio-key,gpio=14,keycode=106,label="KEY_RIGHT"
#dtoverlay=gpio-key,gpio=16,keycode=28,label="KEY_ENTER"
#dtoverlay=gpio-key,gpio=15,keycode=14,label="KEY_BACKSPACE"
#dtoverlay=gpio-key,gpio=26,keycode=30,label="KEY_A"
#dtoverlay=gpio-key,gpio=19,keycode=48,label="KEY_B"
#dtoverlay=gpio-key,gpio=5,keycode=19,label="KEY_R"
#dtoverlay=gpio-key,gpio=2,keycode=113,label="KEY_MUTE"
 
dtoverlay=pwm-audio-pi-zero
dtoverlay=waveshare32c:rotate=270,speed=50000000,fps=60 #rotate=lite
hdmi_force_hotplug=1 
framebuffer_width=320
framebuffer_height=240
hdmi_cvt=320 240 60 1 0 0 0 
hdmi_group=2  
hdmi_mode=87
#hdmi_timings=320 0 28 18 28 480 0 2 2 4 0 0 0 60 0 32000000 6
#hdmi_timings=240 1 38 10 20 320 1 20 4 4 0 0 0 60 0 6400000 1
#dtparam=spi=on 
#force_eeprom_read=0
 
#overclock
arm_freq=1000
gpu_freq=500
core_freq=500
sdram_freq=500
sdram_schmoo=0x02000020
over_voltage=2
sdram_over_voltage=2

---

[acris]

Hello
try another core in advance game option

[Nicola Silveri]

@acris i tried but i have always the same problem