avclub.com/a-real-pain-jesse-eisenberg-kieran-culkin-filming-experience Kieran Culkin's unstructured acting style was a real pain for Jesse Eisenberg on the set of A Real Pain
Jesse Eisenberg says nobody knew if Kieran Culkin would show up in Poland to shoot A Real Pain, and producer Emma Stone had to send a video of him going through customs. He still arrived late, and Eisenberg ended up changing how he directed to give Culkin room to improvise.
— via The A.V. Club, Olivia Singh
