Why is the SD library slow?

I started work on Version 2 of SdFat about six months ago and one of the goals is ease of use for simple apps.

This is great news. Hopefully will address a lot of the issues that appear on the forum related to SD card issues.

I decided to implement C++ iostreams functionality and restructure the internals of SdFat so it will still be a month or two before V2 is ready.

You're a tease. Keep us posted on your progress. I'm sure there are people willing to beta test software for you.