The ultimate problem with this story is that the system is too all-encompassing and intrusive. There are many moments where something urgent is happening RIGHT NOW in front of the MCs face, but then there will be paragraphs of digression because of the system. The feeling that the MC is just standing and staring slack-jawed off into space (interacting with his system) while important plot events happen around him appears just a few too many times for my taste.
Moreover, the system really just has too many features (just like a real pay-to-win shop). There's a section for MCs cultivation, techniques, and body tempering, there's a section for mounts, for battle pets, for random daily events like parkour, for a "trial tower" he can climb for rewards, for an instance space where he can fight "bosses" he's met in the real world(daily), for a gold farming space, for his personal equipment which he collects by killing monsters and getting "drops", for "synthesis" which can combine pills, techniques, or equipment to make them stronger/higher-grade, for a "gem" sub-section which includes a gem dungeon he can run daily to accumulate gems which can be socketed into his equipment for minor stat increases, for a daily sign-in reward, for a shop that sells items and limited-time gift-bags and not one, not two, but THREE separate currencies to make the whole thing run.
And you know what all that stuff actually is? That's word count bayyybeeee~
Seriously, so much of the word count is just MC interacting with the system to get stronger, and so much of the plot just IS the system. The plot feels at once both rushed and like it's dragging because the MC gets stronger so quickly using the system (making it feel rushed) but "quickly" is only relative to time passing in-universe, we readers have to read chapter after chapter of system nonsense to justify his speedy power-ups (making it feel like the story is dragging).
At least, that was my impression. The few good points of the story (like MC's bond with his two friends from the sect, which was actually written surprisingly well for a cultivation novel) all get drowned out by a torrent of different system-related shenanigans and its ever-increasing feature creep.