I am trying to speed up beamer by using the method precompile it using this method. In other words, I created a file mybeamer.tex with the content
\documentclass{beamer}
\begin{document}
\end{document}
Then I tried to compile it by
xelatex -ini -jobname="mybeamer" "&xelatex" mylatexformat.ltx mybeamer.tex
But I got an error
\font\TU/lmr/m/n/10.95=[lmroman10-regular]:mapping=tex-text;
! Can't \dump a format with native fonts or font-mappings.
Is it possible to solve this problem?