How about software aspects ...
There all all kinds of tweaks for benchies, how about for cruching?
Starting with boinc settings (how often write to HDD, not using the screensaver, memory % usage, does reducing network connection from always on to 2 times per day matter?)
Then how about Winblows settings ... how many/ which services should be shut down? Does killing explorer.exe on headless cruncher help, turn off automatic updates, windows time ???. I know if you run in diagnotics mode all you need to do is turn rpc on and boinc will run just fine but I wonder if this produces any better results and leaves the question of how to get the data to/from WCG. I am not sure what the minimum networking services necessary are ... is it better to connect through a proxy and let that machine handle all AV duties?