<p></p>
<p>I tried flickertest.rpg under gfx_fb on Linux/X11/KDE/radeon (opensource AMD drivers) (fbgfx using the X11 backend), and seems to be dropping half the frames in the backend (not in allmodex; Draw and Display FPS are both 60fps). Windowed and fullscreen are the same. It seemed to continue dropping frames until I'd reduced the framerate to roughly 30fps.</p>
<p>Might be a FB bug to report.</p>

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