Completely unecessary

Part 1 - Extending the swap will do nothing for you because it already has a dedicated swap partition on your sd card now that it is cloned. Extending it just places a swap file on the usable free space of the third partition and the only reason you would want to do this is if you run 10 programs at once and need more memory not speed.

Part 2 - No, the browser will not likely become an faster because it is not a full desktop with a power hungry processor. This is a mobile device that is running fully fledged websites that are designed for new age processors. The internet tablet is a marvel of engineering for what it can do and you negative attitude is not welcome. I suggest you sell your "slow browser" because it is not made for instantaneous porn viewing.

Go home.