Go to your arma 3 launcher , Click parameters , Click advanced then advanced again
https://gyazo.com/4a8ff72b66b1db1cd7e78203b2f1630b
Tick the malloc box and click the drop down menu and select tbb4malloc_bi
if that dosent work try the tbbmalloc3_bi
If you dont have the malloc3, message me and ill send you a link to download it