From big box to retroarch (mame core) problem

[dov_EL]

I don't understand why (only with mame core in retroarch), the game starts, but launchbox can't switch in the game, if we press Alt-Tab I switch manually.
I have also deactivated all loading game themes, but the problem remains. Has anyone encountered this problem? Solutions ?

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[faeran]

Make sure you don't have any additional apps trying to open, or any other apps that could be trying to pull focus.

You could try and use Windows Focus Logger to see if it provides you with any insight on any programs that could be pulling focus away: https://www.softpedia.com/get/System/System-Info/Window-Focus-Logger.shtml

[dov_EL]

2 hours ago, faeran said:

Make sure you don't have any additional apps trying to open, or any other apps that could be trying to pull focus.

You could try and use Windows Focus Logger to see if it provides you with any insight on any programs that could be pulling focus away: https://www.softpedia.com/get/System/System-Info/Window-Focus-Logger.shtml

It's not a problem with other programs, this happens only and exclusively with the MAME core, it doesn't happen with the fbneo, mesen, genesisplusfx etc core. only the MAME core causes this problem.
I have the impression that something happens like a frequency change that fools launchbox

[dov_EL]

If I set the screen refresh from 60 to 59.94, I get a flash but the problem disappears.
I think it's a problem that can be solved by the launchbox team by working on the screen refresh

[dov_EL]

[dov_EL]

Solved