Hi Mobile,
I don't use "Titles & Text" as there's a bug which means keyframes are not saved.
If you use "(legacy) Text" instead, there's a duration option which allows you to specify how long you want the rolling titles to stay on screen. The longer you specify, the slower the titles roll up the screen. To enable rolling, position the curser at the place where you want rolling to begin and then use the "placement" tab and move the text to the bottom of the screen. Next, move the curser to the end position and again use the "placement" tab and move the text to the top of the screen so that the last item of text disappears off the screen. This works fine for me and gives a lot of flexibility.
Hope this helps,
Steve.
Another option you can try, is to stretch the ten second event (Ctrl+click, drag the edge) to fifteen seconds. There are limits to how far you can stretch it, so like most of my suggestions, it's a quick fix.
Open up the properties/settings window for the credit scroll event and check the "Frame Size" settings in the upper left corner of the window. These settings should be at least as big as your project size -- i.e. 720x480, 1920x1080, etc. (You can have them bigger than your project if desired...)
A while back I had a credit roll that mysteriously got set to 8x8 or 64x64 or some nonsense, and produced a super-blocky output. Setting the frame size back to correct values fixed it.
If this is the problem, post here what the settings were. I don't remember what mine got set to when it happened, and that might be useful debugging info for Sony.
When installing bee packages like that (or catching swarms), if you use empty frames like in the video instead of frames with foundation on them, you will find the hive full of burr comb (which is a real pain).