Performance difference with the native C++ environment.

emsdk version : 3.0.0

Hello.
I'm working on porting c++ code to JS that uses a header-only library called 'CGAL'.
For convenience, the EMBIND function is used.
However, wasm performance so different from that in c++ environment is disappointing.
The following is the time taken when executing the same function with the same options.
I built the program with the following command:

emcc \
-DCGAL_ALWAYS_ROUND_TO_NEAREST \
-DCGAL_WITH_GMPXX \
-DCGAL_USE_GMPXX=1 \
-DCGAL_DO_NOT_USE_BOOST_MP \
-DBOOST_ALL_NO_LIB \
/home/liam/project/src/cgal_interface.cpp \
-I /home/liam/cgal/include \
-I /home/liam/opt/include \
-I /home/liam/eigen-3.3.9 \
-I /home/liam/project/src/boolean \
-I /home/liam/project/src/offset \
-I /home/liam/project/src/simplify \
-I /home/liam/project/src/types \
-I /home/liam/project/src/utils \
-L /home/liam/opt/lib \
-O3 \
-static \
-std=c++1z \
--bind \
-o /home/liam/project/dist/cgal.js \
-lgmpxx \
-lmpfr \
-lgmp \
-s MODULARIZE=1 \
-s USE_BOOST_HEADERS=1 \
-s ALLOW_MEMORY_GROWTH=1 \
-s ASSERTIONS=1 \
-s DISABLE_EXCEPTION_CATCHING=0 \
-s SINGLE_FILE=0 \
-s VERBOSE=1 \
-s ENVIRONMENT=web \

native c++ => 0.085 sec
wasm => 4.977 sec

How can I optimize the runtime execution speed?