Call of duty was never super slow paced. You must be confused with Operation Flashpoint or the likes.
Maybe not super slow paced like Squad but super slow paced compared to today’s COD.
https://youtu.be/GfrEy6xcyec?si=QL4lMkM4QvabkgvQ
Back when you’d hold positions and provide cover fire while someone would slowly push up or flank etc. It was a much different game before MW released.
I used to play this at gaming cafes in the early/mid 2000s with my buddies before we all had proper gaming computers alongside Battlefield 1942. Definitely not confusing it for Operation Flashpoint haha.