I can't speak for BlueHost, but bad neighbors are hard to deal with in pure 'shared hosting' environments, and are regrettably unpredictable, and hence harder to mitigate against.
I've had similar problems in the past with Dreamhost and its ilk.
For a little more money, you can switch out to Linode which is at least VM-based instead of fully-shared platform, but the tradeoff is that it is more expensive, and you also have to administer your own services. It's also possible that you lose some of the burstability of a shared hosting platform as the caps are hard caps.
Comments
I can't speak for BlueHost, but bad neighbors are hard to deal with in pure 'shared hosting' environments, and are regrettably unpredictable, and hence harder to mitigate against.
I've had similar problems in the past with Dreamhost and its ilk.
For a little more money, you can switch out to Linode which is at least VM-based instead of fully-shared platform, but the tradeoff is that it is more expensive, and you also have to administer your own services. It's also possible that you lose some of the burstability of a shared hosting platform as the caps are hard caps.