This might be useful, but I'm not sure.  Unfortunately I only have the Buri to test with at the moment.  I only think it might be beneficial on clearly faster processors like the peak or peak+.

I think we can probably add this in the future.  The code certainly allows it since you can override this default in the constructor.  I think that effort my be a bit more involved, though, since we would probably also want to tweak other constants like the contacts_list chunk size, etc.

I propose getting this in the tree first and then evaluating if it needs to be adjusted.