The game definitely starts strong, but see if you still feel that way when you've finished it. Not saying you definitely won't, but the game's problems didn't become apparent to me until around the halfway point. For the record, I still really like driving around in the Batmobile, chasing bad guys down and doing sweet sustained drifts, but at a certain point I just couldn't take another round of shooting drone tanks in a walled-off arena any more, and unfortunately after I hit that point the game still made me do it like a dozen more times.
The tank battle gameplay never evolves the way the stealth and combat stuff does. Your first instance of shooting tanks is almost identical to your last, save for a couple of ultimately meaningless extra abilities and the fact that you'll be shooting way more tanks at the end. It's such a basic, monotonous gameplay style, with zero room for any creativity on your part; you just knuckle down and do it until it's done, then you do it again roughly an hour later. Then you unlock a side mission type that is nothing but tank battling. Then all of the game's bosses are also tank battles.
The Batmobile starts feeling less like a cool new addition and more like a crutch. Like Rocksteady couldn't figure out how to further develop the traditional on-foot gameplay so they had you shoot a few hundred tanks instead. There's no clever new ideas that change up the normal Batman gameplay like the Mr Freeze bossfight in Arkham City this time around. Even the Metroidvania level design of the first two games is dropped, apart from one or two areas, in favour of linear, outside areas that your car can follow you into. Drive a bit, hit a gate, jump out and do some stealthing or fighting so you can open the gate to drive further.
Then you get to the thoroughly Ubisoft-ian side missions, where you simply repeat a task several times over until you get to watch a cutscene of Batman subduing a villain. Watching what could have been neat bossfights, which Rocksteady apparently decided would be more satisfying as video files.
I found the game very disappointing in the end. Even if I could get it running nicely on my 670, the thought of all that tank battling just puts me off ever wanting to replay it, and I'm someone who's replayed Asylum and City like a dozen times each at this point. It definitely has its moments of that Rocksteady brilliance, but overall it's a very distant bronze medal in the trilogy for me.