I have 7950(TAHITI) card and same problem. But i edit fie GridAutosport.sh in
game folder.
#HAS_CATALYST="$(grep fglrx /proc/modules)"
#if [ -n "${HAS_CATALYST}" ]; then
LD_PRELOAD="../lib/x86_64/libtcmalloc_minimal.so:${LD_PRELOAD}"
export LD_PRELOAD
#fi
And this help. No more crash. I test with low and high settings in ingame
benchmark.