The 2700X is zen+ based and while it wont "bottleneck" your system, depending on your resolution, it might get you less fps.
bottlenecking is not really a thing.
A faster cpu=faster fps
A faster gpu=faster fps
That's just how it is.
in 1080p, the cpu plays a much bigger role than in 1440p, and even more so in 4k.
I believe in 4k you won't see any "bottlenecking"
But in 1440p you might see a bit, and in 1080p it would be pretty apparent.