Don't listen to IMDb trolls reviews. Its a pretty great movie. 86% audience score.

Rating: 9/10 (23 July 2017)

If you look at the reviews on here, you'll see most people either love it or hate it, and a few people find it good but not great. However, the latter is less pronounced. The reason why is because only the most passionate people write reviews for popular and critically acclaimed movies such as this.
I'm just writing this to actually help people who may be on the fence about watching it and like me, may not be sure which reviews to believe to make their decision.
However, the audience Cinemascore is very high with an average of about 85%, maybe more, RT is around 83%, and of course here it's 8.7 after 50k + ratings currently. So, analyzing that, you'll find the vast majority of people do not agree with the negative reviews or really any actual rating below an 8. Anyone who rates below an 8 is in the vast minority. And this is not to include a Metacritic score of 94, with about a dozen top critics giving it a perfect score of 100.
Nolan movies always attract haters. Heck, on IMDb any critically acclaimed or pop movie attracts lots of trolls, haters, and negative reviews. So don't listen to the MINORITY that vote it below 8 or are highly critical. They're either trolls, Nolan haters, or they didn't see superheroes in capes so we're disappointed a summer movie was actually artistically made.
Now, that being said, let me give you my brief review: Visually speaking, Dunkirk is amazing and awesome. It's a little like Gravity in that way that the visuals alone are enough to make it a good movie experience. They're stunning.
The film is shot like an old classic, silent war film with very little dialogue, relatively speaking. There is dialogue, but just not nearly as much as most war films you've seen. Simply put, this is visual storytelling, perhaps like silent era films in some ways, but with modern day technology.
But not to worry, the film grips you from the opening scene and is riveting with nonstop action sequences. Personally, I found it hard to look away, my eyes glued to the screen. In other words, if you just accept it as a visual war movie and an artistically made one, there is no need for excess dialogue; it's good enough as is to rivet and immerse you in the battle of Dunkirk.
Technically, and visually, it's about perfect. You feel right away that this is shot like an Oscar contender, and that is sustained throughout. It very likely will get many nominations including Best Picture and Director.
Personally, I thought it was great. There's no wasted scenes, it goes by fast (only about 90 minutes), it's nonstop action, with beautiful scenery and scenes. It plays out like a heroic victory for the allies due to several heroes including a pilot in a dog fight.
This is a 4/4 **** movie with no weaknesses other than if you're into artistic writing it doesn't develop characters. But the story's essence is to put you right into the middle of the action.
I liked this more than Private Ryan (9/10) and Hacksaw Ridge (8/10). Take that for what you will. It's just more immersive, tight, shorter, and visually astounding. I liked that there were no wasted scenes.
So in conclusion, on this one, believe the 10 or so top critics who gave it a perfect 100 score on metacritic, and the audience who gave it an 86% overall. That's telling you most people loved it. Don't listen to the negative critics on IMDb. They made me doubt its worth, but once I started watching it I loved it and knew they were in the wrong.
9/10 (no less than 8)