I use Qt Creator and Visual Studio 2010 on the same medium size code base and Qt Creator has a much faster UI.
I find that compilation in Qt Creator is possibly slower if you are on windows (using mingw) but on Linux its around 10 times faster (through the use of ccache and make -g4).
I find that compilation in Qt Creator is possibly slower if you are on windows (using mingw) but on Linux its around 10 times faster (through the use of ccache and make -g4).