Precision is much more important than speed, speed is a byproduct of accuracy and repetition and confidence. Practice your chords until you can do them in your sleep and you will find out that the speed issue will take care of itself.
A proper setup is a "tune up" of your guitar to make it as easily playable and sound it's best. It involves the action, (how high the strings are off the fretboard) intonation, (do all the notes seem in tune all the way up the neck)
pickup height, and other things. A LOT of people quit playing guitar because it's more difficult than it has to be. Most guitars are shipped with the action high so that everyones individual tastes can be met. Some people like high action and some prefer low. It's usually not that expensive or difficult to do, if you know anyone who plays, try their guitar and see.
By the way,
The only stupid question is one you DON'T ask!
There are a ton of people here who will try to answer all of your questions, no matter how simple, that's how we all started!
By the way, welcome to the madhouse!
When I die, I want to go peacefully in my sleep like my grandfather, not screaming......
like the passengers in his car.