It already starts strong, actually: the first 50 issues. They set up quickly the whole scenario and environment, as well the general backstory. They start light and easy, and as they go on, they strive to be gradually more nuanced and serious, thus opening for much more new forms to storytelling. It's needed, or else, the pun-fest atmosphere would be repetitive at some point and stop being produced. A good form to start your franchise, in my opinion.
After the 50th issue, however, things start to be very weird, because that's the era where the writers try everything to see what sticks and what doesn't. While the deed itself is good, it also contributed, along Penders and Justin Gabrie, to the infamous inconsistency of quality, where when it hits, it hits, and when it misses, it misses. Writers such as Bollers (had a rocky start, but eventually improved) and Gallagher weren't afraid to manage the wheel and produce even more of their stories, who usually were good, and had they never offered their legacy, then Archie Sonic would indeed be completely succumbed to the Dark Ages.
There's no point where it "finally starts good". It IS good after all. However, also quite inconsistent and variable, where they are unable to stay good for at least 3, 4 issues. If it weren't for Penders (refusing to work in coexistence with others, keeping his pet characters and maintaining his own separated empire of crazy echidnas) and Justin Gabrie aka Romy Chacon (never doing his job of editing, always attempting to write with stupid executions whilst having no professionalism and having a lot of narcissism), then the comic would certainly be more strong at its consistency.
In summary, it's a prime example of hit-and-miss. The best way to experience and consume Archie Sonic is, practically, reading all of it. From the very beginning, until the very end. That's how I started to read, and in the end, I was able to invest into it, appreciating for its content, characters and such.