What's the best gamemode for xp? I usually play conquest but I only get like 10k xp for a 30 minute match and I sometimes play War Pigeon which gives me ~4k xp for 15min match.
Do Operations, For the same amount of time I average around 20k-30k xp a game. Plus it helps if you are squad leader/have a squad leader who is pumping out objectives right as they finish.
It all depends on what you're good at. Conquest and Domination should average the same xp per hour for instance. However I enjoy close quarters combat so naturally I do well in Domination. Obviously non objective games like TDM will give you less points because you only get points for kills and other small actions.
Honestly I would just play whatever game mode you enjoy. Once you get better at the game, if you decide you want to grind to get better guns, attachments, etc. then you should see which objective mode works best for you.
I have recently started to play Operations I was a big rush fan.
But with operations having a good squad and utilising all vehicles like tanks, me and my squad usually hit around 40K a game on average.