Hello
About of timing and/or time controlling, the last versions have a new “time layer” that once You learn about it, it turns to be very usefull
See the following link and the sample of darkspace65:
About rendering of gif animations:
I the animation of lion2… I notice some kind of antialiasing, which I don’t understand, because for antialiasing some pixels have to be partially transparent, but AFAIK gif animations only allow full transparency or full opacity… 
