New comparison videos appear to show incongruities between Zone of the Enders HD Collection and its source games, Zone of the Enders and Zone of the Enders 2: The 2nd Runner, as well as disparities between the Xbox 360 and PS3 versions of the HD collection.

The most important issue, according to Enders fans that have contacted us, is that both games in ZOEHDC move more slowly than the original PS2 versions. The comparison video seen here shows that mechs, lasers and melee attacks all lack the amped-up pace of the original, as though the game were being played in slightly-slow-motion.

Other concerns have been raised over framerate inconsistencies between the 360 and PS3 versions of ZOEHDC, with video comparisons supposedly showing that the 360 version runs at a higher, more consistent average framerate than its PS3 sister. Regardless, neither version consistently runs at the 60-frames-per-second figure stated by the collection's official UK website, rather the majority of the game operates between 30 and 40 FPS.

Unfortunately, this isn't the first time such reports have come in regarding an HD rerelease of a Konami classic: Silent Hill HD Collection had its fair share of framerate issues, so much so that a patch was pushed for the PS3 version and Xbox 360 owners were given the option to exchange the game entirely. We've reached out to Konami for a statement and will update with any new information we receive.

[Thanks to everyone who sent this in!]