I work in an European institution with a similar system as tenure tracks, except the evaluation arrives at the end of the third year.
From the start, accepting this job was a gamble because of the poor fit (I had other offers but I didn't want to move over the ocean). Teaching is 3/3 but that is not considered a lot for this country. I managed to convince them I would slowly shift my research interests to fit the department. Realistically, however, I didn't. I was crumbling under the amount of teaching prep (teaching here consists of lectures only, no seminars). I continued to publish on my preferred topics because it required less work and I didn't want to let the drafts etc go to waste. Didn't find the time to truly pivot to something else.
It didn't help that I fell sick for 4 months in the middle of the third year and my department did not postpone the evaluation. I'm currently trying to build my evaluation dossier while still being pretty sick.
Anyway, this might be the end for me in that uni. I won't blame them. All of this to say, don't take a job offer if you know deep inside the fit isn't right. I try to tell myself if I got several offers in the past, maybe I can get another offer in the future. But I was sick for a few months which stunt all my research, not to mention I can imagine my resume won't look good with that failure.