AverageCitizen
Explorer
I think there are some abilities (feat), like warcaster, that help with spell economy, or basically when you can cast a spell with like you weapon and shield or what have you in hand ...
I had issues in one battle where I switched from firing and using a loaded crossbow, to a sword and shield, and it took my whole action one round to ready the shield, so... yeah still figuring out when to use bonus actions, actions, extra attacks, reactions... but it does seem simplified and kind of scaled down, and in a lot of ways i think that is good... and i like that all the classes keep getting really cool things as they go up levels, but not ridiculous amounts of powers that I can never remember ... I guess in 4e that was neat flavour but it really is a lot for someone with memory issues to remember... when you get closer to 40th level... whew!
See, warcaster is part of the problem, though. Because it exists it indicates that we are expected to keep track of this hand economy stuff, but the game doesn't really help with it very much, and RAW the best way to warcast right now involves dropping your weapon in between turns to cast certain spells. I doubt anyone actually plays that way, though. It just gives me anxiety that I might, theoretically, meet someone who does. I am not sure if I could handle that.