So I'm starting to attempt some of the faster songs out there(I call them that I'm sure you guys don't >.>) and I find I'm having trouble telling during...I call them streams and stacks, I don't know what you kids call them D: but on songs like this one I find I can't really tell if I'm doing it too slow or too fast until I start missing. Maybe it's my skin but I find I can flip flop over the perfect timing too easily to tell if I adjusted enough. Any tips or just keep guessing?
Unrelated note: How do I get my own or others' replays to save for later? I'm sure it's really obvious and I'm just blind...but...