A cool idea, what are you using it for?
I agree with Sam M: The first one is too fast, whereas the second one is too slow.
A golden sollution (in my opinion): Make it fly to the ground at the speed of video 1(fast), and let it shatter at the speed of video 2(ultra slow-mo).
For a more dramatic effect: make some shards (or perhaps just one) fly just next to the camera. Add some motion blur (vector blur through the Nodes system) for a cool effect.
The shape of the shard to me look kind of awkward. Perhaps if you could tell us what you’re planning to do with it, I would understand but I don’t think you’ll ever see such a glass shape fall to the ground in real life.
Physics: When I look at the video, I can’t help it but think of the shard as if it were made of rock. Try dropping a real glass. As we all know, dropping a glass in the center of the room will most likely cover it with tiny pieces of glass. The shards should have a more equal size, not some huge ones and a bunch of tiny pieces. Fiddle around with the Fracture Add-on settings to get a more realistic effect.
The pieces do look a bit ‘flat’. Have you tried experimenting with the Crack Type and Roughness calue in the Fracture menu? Fiddling with the amount of shards and the Crack Type could perhaps also solve The ‘big and small’ shards problem.
CREATOR QUESTION: “also if anyone knows a way in which to make particles slow down, that would be greatly appreciated”
Answer: do you mean make them slow down in mid-air? If you’re talking about an actual particle system, go to that particle system and in the PHYSICS panel, there are 2 values called ‘Drag’ and ‘Damp’. Those can do the trick for you, I would say. Don’t forget you can always animate those values with keyframes if you want the particles to fly fast, then come to a stop in mid-air.
That’s all I can find for now Good work!
Hope this helps,
and Happy Blending!