#3
Because when you are tensed up you are pushing speed at the expense of control and nuance. That isn't good. To be relaxed is to be in control, so the fact that you slow down is not surprising.
#4
Quote by Erc
Because when you are tensed up you are pushing speed at the expense of control and nuance. That isn't good. To be relaxed is to be in control, so the fact that you slow down is not surprising.

So what do I do....
#5
practice as slow as you have to to stay relaxed and then bump it up a little bit and practice til you can relax at that speed. repeat.
#6
Quote by SlashYourFug
Who cares. Trills are annoying.

Either give the TS some help or GTFO.

And TS, just practice it slowly to a metronome. Like Erc said, it's normal to become 'faster', but you will lose a lot of control of you playing that way. You need to have as much control as possible, because it is the only way you will ever be able to play with accuracy. Always remember, accuracy > speed.
"It is always advisable to be a loser if you cannot become a winner." - Frank Zappa

The name's Garrett.

Gear and stuff:
Taylor 310
American Strat w/ Texas Specials
Ibanez JS1000
Vox Wah (true bypass & LED mod)
Dr. Z Maz 18 JR NR