TigerX2711

Hi. I've recently installed Big Box in another drive (just copied files to swap from a hdd to a ssd) and whenever it's booting shows some kind of scaling between different resolutions or something alike. It's as if I was doing Alt+tab to change between windows (it even reads Big Box on the upper left of the window, which appears for a second and then it goes away) and though it doesn't lose focus to the point that it's unplayable and keeps functionality it's rather annoying, specially since it doesn't have the same behaviour with the original drive. I have only mame installed as emulator and it does it just before the startup video, then just before the theme is launching (with any theme) and later before the game I choose boots. Any kind of help will be really appreciated.