The Grass Roll was discovered October 9th 2022 by Clix_Gaming. By rolling and tapping the aim button just before entering the sneaking grass texture, Kaan retains all momentum and extends the next roll animation. This saves several seconds throughout the Jungle section and over 10 seconds on Mexican Extreme.

[the following video showcases variations on1: walking into grass, 2: rolling into grass 3: executing the Grass Roll glitch]