If I want to use the source version, do I need to uninstall the installer version then?
IIRC, I had both running in parallel and no problem. But you cannot use the tuxfamily download to run from source and vice versa (either use a Python installation and run from github source or run the tuxfamily stuff but not inside an extra Python installation).
BTW, I fear running from source won't fix your problem anyway. It looks mostly like those never ending OpenGL issues. Try switching graphics card will probably be your best approach for a solution.