A stability patch that accompanied the release of Call of Duty: Ghosts’ Onslaught DLC has created some frame rate issues on Xbox One.

Digital Foundry reports that the patch has created consistent frame drops in some locations on some of the new maps.

“Kicking off with a look at Stonehaven, it’s immediately obvious that things are not quite right.” said Digital Foundry. “While the game does indeed hit 60fps in this stage, frame-rates are dramatically impacted when the whole level is in view, with metrics varying between 46-60fps as we run across the landscape.”

“As frame-rates fall below the desired 60fps target, we also see the appearance of some screen-tear, adding some judder, making drops in smoothness more noticeable.”

When sighting down a sniper scope, the frame-rate drops even lower, notes Digital Foundry.

The Xbox One edition of Call of Duty: Ghosts has been mired by claims of performance issues even prior to its release.

In October Infinity Ward executive producer Mark Rubin announced that the PlayStation 4 version of Call of Duty: Ghosts would run at a higher native resolution than its Xbox One counterpart.

In a tweet, Rubin said, “Hey, been on the road last couple weeks so haven’t had a chance to update, but wanted to confirm that for Xbox One we’re 1080p upscaled from 720p. And, we’re native 1080p on PS4. We optimised each console to hit 60 FPS and the game looks great on both.”

“I definitely see-slash-hope both platforms will look way better the next time we get a chance at it.”

“First launch, first time at bat at a new console is a challenging one. That's just the way it is. For people fearful one system is more powerful than the other or vice versa, it's a long game.”

Still a massive financial success by any definition, Call of Duty: Ghosts is nonetheless understood to be the poorest performing Call of Duty title in recent memory.

According to analysts Cowen & Company in December 2013, Infinity Ward’s latest entry sold 19 percent less year-on-year compared to 2012’s Call of Duty: Black Ops 2, and 36 percent less year-on-year compared to 2011’s Call of Duty: Modern Warfare 3.