I agree that he's closer to OT, but there's hint of energy from PT too, he doesn't move as swiftly nor is as agile in OT as we see R1. Lots of force powers being used and a saber spin. That's pure PT.
So I see a lot of people saying this in response/criticism to the Vader lightsaber scene, and it's simply not true.
His movement was simply a combination of:
and
Not even close to prequels flippy bullshit. All his movements meant something.
Vader was toying with old man Obi Wan in ANH. That speed isn't representative of him. Vader in RO was no faster or flashy than he was in ESB or ROTJ.