I'm prob the only person in this post to talk about the main reason of this post! LOL!
Specialist and support does help u rank up fast. I was stuck on 15 prestige forever now they bumped the prestige up to 20 and I am on lvl 19 right now.
To rank up the fastest go with sam turret, ballistic vest, and recon drone.
The sam turret gives u a lot of points for taking down uav's, counter uavs, and any helicopters in the sky.
U get soo much points every time your team members put on the vest. Yell out in the lobby where u put the vests so people will more likely put them on. Say something also like "it's like putting on a condom, u don't want to put it on but it will save your life". People think about it and put it on!
U get soo much points every time u tag someone and assist points every time someone kills that tagged enemy.
Make sure to put a specialist package on every time u prestige. U get so much points by leveling up all of your perks all at the same time. He is right in the video, make sure to have hardline on to get hardline pro asap. Use either assassin or quikdraw as your first perk.
You're only 1st Prestige and it took you 1 day 22 hours? I'm 7th Prestige and barely have 6 days played on my main, and my new account is level 60 with 2.5 hours played. Oh, and I just get XP from being a better player, not using little crafty techniques to basically cheat your way to a high rank. I'm not saying I level up super fast either, just that your level/time played is not impressive at all.