Some people complain about filler scenes but I do think some 'fillers' are hardly unimportant PLUS the execution…
I didn't found this episode filler at all, u can call it slow-paced on the plot part, it's just some people expect each episode to be intense and give them adrenaline rush or something like that i guess.
https://www.youtube.com/watch?v=yWdLOYhfJ7g