The Bohemia news release for the 64 bit version of Arma 3 contained an interesting comment. The comment was that 64 bit OS running the 32 bit version of Arma 3 (i.e. most of us) can now use 3 gigs of system memory (i.e. an extra gig). This means you can increase your “-maxMem” parameter from 2047 to 3071 if you want. May give you a small performance boost and help avoid memory crashes.
Here’s the link for more info – https://community.bistudio.com/wiki/Arma_3_Startup_Parameters
Apologies if this is already known, but seemed worth a post just in case you missed it.
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