More than 1080p will not be necessary for retrogaming 😁

@ivwshane /recalbox/system/recalbox.config

I personally have it set to 720p, as there is no point in wasting cpu power rendering these games at 1080p, and at 1080p, a lot of shaders will slow the device down, whereas they work fine at 720p

Also, as per inside that file, you must stop the N64 and Dreamcast rendering at even 720p.

These lines are there, probably preceded with a ; so they don't take effect. That semi colon must be removed, and the lines need to be:

system.es.videomode=CEA 4 HDMI
Thats near the start

global.videomode=CEA 4 HDMI
Thats probably around line 300

n64.videomode=CEA 4 HDMI
dreamcast.videomode=CEA 4 HDMI

Those 2 will be around line 400 ish

@tyrell because 64 bit only. They said it a few posts after this one.

I use emuelec. It is an ugly but working copy of Recalbox

FIXED!!! thanks to toniosj, see the gitlab link at the beginning of this post.. but essentially it's due to my 4K tv and he had me change some setting in config.txt, so visit the gitlab issue for specifics

https://gitlab.com/recalbox/recalbox/-/issues/1384#

Edit your "config.txt" file on /boot folder:
-If you're using PuTTy use "mount -o remount,rw /boot" commmand.
-If you're using WinSCP open console (Ctrl + T), enter command "mount -o remount,rw /boot" and click Execute.
From this file search for hdmi_group and hdmi_mode and set both as following :
hdmi_group=1
hdmi_mode=4
Don't forget to remove '#' char on those lines if present.

Hello @Bkg2k,
Not load of the system in background here 😕 . Right now I checked it again several times with same result. As example in the next case, if I set a custom video in folder bootvideos with this configuration in recalbox.conf
system.splash.length=30
system.splash.select=custom

The system is delayed 30 seconds more in startup. The spashscreen with pacman and the load of emulationstation appears after the video is played.

--
RB7.0 + Raspberry pi 4 4GB

As another option more:
If there doesn't seem to be a good solution soon, take into consideration to add optionally the core dosbox-X. It is a more advanced and vitaminate version of dosbox.
https://dosbox-x.com/

@acris i tried but i have always the same problem