Originally posted by Zenwolf
https://j.gifs.com/KzZWRW.gifhttps://j.gifs.com/yAX9Yn.gif
https://j.gifs.com/KrBpnr.gif
https://j.gifs.com/yAX9Yn.gif
https://j.gifs.com/y0rEQ9.gif
I'm not really seeing a snail pace here. Ignore the speed, the gifs do that, but really though just watch the fights again, there are some quick movements that happen.
He can move his saber quickly but his body moves rather slowly.
1:57 he doesn't even realize Luke jumps right out of the pit he was in. 2:11 despite being weapon less Luke maneuvers around him and shoots him with the gas. This is against a very weak Luke who wasn't ready for this and still showed himself to be far quicker than Vader during this fight. 2:41 Vader falls off the platform embarrassingly so showing he lacked the awareness and skill to do anything about it against an inferior Luke. 5:30 Vader gets tagged in the arm again against a vastly inferior Luke who wasn't ready for Vader according to his master, Yoda.
https://m.youtube.com/watch?v=C-DeI3ohVbY
His lack of mobility and maneuverability is an issue against Luke skywalker before completing his training.