First, openlp is wonderful, thank the author. I learn much from it. But since it is built with Python and PyQT, it is a little slow and heavy.
I started a new project "FreeWorship", and this project used C++ and QT. It is very fast and light. It is free,too.
These days I am very busy. If anyone is interested in "FreeWorship", I will pay more attention on it.
God bless you!