Black flash / Gap between videos

From my previous tests a couple years ago, the black flash/gap between the videos prevented me from being able to use it in production for my clients.

I am now trying the new v2 Xibo, and there is still a gap between videos.
Moreover, it crops half a second from the end of the outgoing video before playing the new one.
SurfaceView/TextureView doesn’t change a thing.

I am using the Android client.
Any update in the works, workaround, or is the performance better on the new Linux client?