When running the performance subcommand of the CLI to parse a 10MB file, the parse completes in under 10 seconds. When using the parse subcommand, it takes over 10 minutes to get the result.

I ran the parse in verbose mode, and I get the following output:
[info] Time (compiling): 1773ms
[info] Time (parsing): 10542ms
[info] Time (writing): 652815ms
......
that's about 2 seconds for the compilation
10 seconds for the parse
and about 10 minutes to print the output