The DL 764's use the same Panasonic eFX based systems as the A330's. On a recent 764 DTW-LHR trip, the systems rebooted twice in the middle of the flight. On the way back, the movies did not match the selections. Also, I could reliably cause my system to reboot when attempting to play several of the games. I think I can safely say that the eFX AVOD issues are not limited to the A330.
The A330s actually use the 3000i system, which is a generation older than eFX but provides comparable functionality and even a couple of extra features like the interactive moving map as a result of NW's software choices. If not for this difference in hardware, I expect the A330s would already have had their interface changed to be identical to Delta's.