About 2) : the multi-process model is not "1 process per tab", but "M tabs sharing N processes". So you won't end up with 40 processes in your case. I've been r

About 2) : the multi-process model is not "1 process per tab", but "M tabs sharing N processes". So you won't end up with 40 processes in your case. I've been running nightly with 5 processes for months and found that to be a good setup.