There is more going on then just speed issues here. While I may not get into them all.. Lets just say I have my reasons, and rest assured it wont be away for long.
As for PDF, No It wasnt designed to do 100 at a time, so large post like MD gets a server timeout.
I did have a backup of it in a way. Thats how I restored it the 1st time. Granted, yes I would love to make a html type archive of posts too.