WI: Hadrian was a psychotic emperor?

What-if Hadrian, instead of being the respected and overall praised ruler that he is seen as now, was psychotic very much like Caligula or Nero? How would this affect the Roman Empire during Hadrian's reign and in the future? Would this lead to the breakdown of the empire a lot earlier than in OTL as Rome misses out on the stability it greatly needed after Trajan's conquests? Would very little be changed and Hadrian would just be seen as another bad emperor in Rome's history?
 
The easiest answer would be : like Nero, have some author that, writing the account of Hadrian's reign, turn him as a psychotic emperor.

Hadrian did actually something really close than Nero : he turned the imperial cult to a more hellenistic heroic one based less on military sucess than artisitic and esthetic ones.

The Villa Adriana shares many features with the Domus Aurera as well.

So having a political crisis after an OTL Hadrian, with a new dynasty trying to legitimize itself by making Hadrian sort of monsters like it happened for Nero, would do it.
 
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