Coming from a 2d animation background with Flash and Toonboom,I find drawing my frames efficient as I draw my characters exactly the way I want them to move.The disadvantage is the time it takes to draw say a 2 minutes animation,is way longer and ur hand gets tired bigtime.

Now,in getting into Maya for serious 3d animation,I realized everytime I make some key poses on the time slider,the movement when I do a playback is messed up as the timing is incorrect.I readjust the keys to match the timing I want but things are still off.So,I open up the graph editor,and start tweaking curves(frustrating and time consuming).Then I realised,there is a way I could animate freely,I could just make my tangent settings for all my curves to be stepped rather than linear or flat and start posing my character for every frame.If I want to ease in,I pose the movement more closely together exactly from a 2d animation approach rather than tweaking curves but someone pointed out that too many keys in the time slider might be problematic for Maya to compute.
Is that true?