In current release, mingw ld is replaced with clang's lld, which greately reduces link times.
However, I have unfortunately found a little problem with that: app icons are no longer working. Which is sort of strange, as during the build, the process is to compile .rc using windres utility into object .o file, then link with linker.
I have spent several hours with that without finding anything. Maybe somebody else would be more lucky than me?
(If there is no solution, I would go with lld anyway, this is just small glitch that can be ignored for now....)