I wouldn't be too sure about that, as dopaminergics are not really that known to cause depersonalization, like serotonergics, NMDA-Antagonists and kappa-opioid-agonists. Dopaminergics are more linked to psychosis.
It's interesting that antipsychotics often make depersonalization worse, but it's probably not so simple, because antipsychotics alone don't cause depersonalization. Maybe it does in combination with another drug that we don't know, just like mCPP. It has been shown that mCPP causes depersonalization in people with mental illness, but not in healthy people. But it does so, if healthy people take a benzodiazepine antagonist before.
It should also be noted, that in the NMDA-Antagonist-Model antipsychotics do not make the depersonalization worse. Because of this I conjectured that Lamotrigine does not work for poeple, who get worse by taking an antipsychotic.