Thanks for your inquiry.
I believe this issue could be caused by our default RenderSurface implementation. It is based on GlSurfaceView and there is some delay caused by OpenGL initialization when you attach it to View hierarchy. Please try to switch to Canvas based RenderSurface ( it’s a bit slower than OpenGL based RenderSurface but in most cases drawing performance should be OK ):
Hope this will help you!
After changing surface to RenderSurface I have black borders that I did not have before.
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