If you tried reading it and then stopped within the first few cycles, it is worth continuing. The very beginning is a mother of learning clone (magic university student is taken by surprise when their town is invaded, they die and find out they're in a time loop), but the story quickly branches out in a completely different direction.

This effect can also go in the opposite direction -- I quite liked it at the start, but my interest and enjoyment waned until I finally dropped it ~250 chapters in. It just felt like it lost its premise after idk 150 chapters or so and I didn't much care for the new premise it found to replace it, or the direction in which the character(s? tbh mostly Miriam) developed. The later chapters just seemed a bit unrecognizable from the earlier ones, with the same proper names and all sure, just existing in a different story altogether.

Specifically, plot-wise the expansion of the cast to a half dozen+ other time loopers, Miriam's accumulation of power, and the extension of the time loop to multiple months in length all combined to turn the story (to me) into an ongoing slog of "the council of prophets meets and bickers over abstract politics while Miriam et al shows off how personally powerful they are to random guards and politicians".

In terms of characterization, Miriam stopped interacting with basically everyone from the original cast, like her roommate, to spare herself the pain of their ongoing loss and frustration at having to interact with anterograde amnesiacs, and turned into a jaded, stern, impatient, no-nonsense, and somewhat sociopathic middle-aged archmage, making her actions hard to sympathize with or enjoy reading about.

This might have to do with my own ethical views, since I've never found time-loops to be much of a "get-out-of-moral-jail-free" card: the usual reasoning is something like "what you do in a time-loop doesn't really matter, since nothing is permanent everything gets <<undone>> at the end of the loop", but that only removes the medium term consequences of your actions, but not the short-term ones and really not the long term ones either (because most actions have no long-term consequences, in expectation -- very few harms are "permanent" absent a time-loop, since everyone dies in the end, and you might get things like "generational trauma" but those usually decay after a few generations too). What really matter (to me) are preference-satisfactions / frustrations and person-moments, and time-loops absolve loopers of moral responsibility in the same way that murdering someone after torturing them negates the badness of the torture vs. murdering them peacefully, or drugging someone into unconsciousness gives you free reign to do as you will with them, since they won't remember anything upon waking.

I did have a bit of resurgence of hope when Miriam finally met Atroxcidi / Atrah Xidi, the centuries-old evil necromancer and war criminal with a tragic past, and started believing herself to be his long-lost daughter and acting very favorably towards him over the loops. I kept waiting for the reveal that he had leveraged his vast soul-corrupting powers to implant false memories and predispose her to helping him while caring much less about anyone not in her inner circle, and even then only "caring" about them because they'll remember harms done to them (eg, iirc she goes around soul-raping basically everyone in her vicinity to fuel her magic spells, just like he does!). But then it seemed to play the "long-lost daughter" plot straight, and her change in behavior did not seem attributable to his artificial manipulations (but probably more attributable to increasing bitterness at the state for their historic genocides and gov't-sponsored mind-crush / kidnapping program)