Recalbox with Retrotink S-Video via GPIO

[furpena]

Hi everyone,

I have been a Recalbox user for a while and I would love to use it now with a GPIO hat that outputs CRT analog video signals. Here is an image:

However, I have not been too successful setting it up with Recalbox.

I'm limited to S-Video as that is the only input my monitor has. The creator of the GPIO hat only supports Lakka for S-Video output but I really want Recalbox UI and the option to rotate the menu for TATE games.

The photos are the results I have got from using his hdmi_timings and overlays for his LAKKA image:

hdmi_timings=2048 1 180 202 300 240 1 3 5 14 0 0 0 60 0 42954545 1

display_rotate=0

audio_pwm_mode=2
disable_audio_dither=1

disable_overscan=1

hdmi_drive=2

config_hdmi_boost=0

hdmi_force_hotplug=1

boot_delay=3

disable_splash=1

#Overclock
gpu_mem_256=128
gpu_mem_512=256
gpu_mem_1024=512

avoid_safe_mode=1

dtoverlay=pi3-disable-bt-overlay

dtparam=audio=on
#dtoverlay=pwm-2chan,pin=18,func=2,pin2=19,func2=2

dtoverlay=dpi24
enable_dpi_lcd=1
display_default_lcd=1
dpi_output_format=519
dpi_group=2
dpi_mode=87

What should I look for or what should I change so the menu and the games do not show squeezed for the S-Video output?

Cheers!