One year ago I quit Fiserv, and I am constantly grateful to have made it out, thankfully to a much better position elsewhere.
There were many things not to like, but my #1 complaint about Fiserv was that I was implementing "products" that were either not fully developed or didn't work as advertised, and I had to face clients on a daily basis and try to tapdance these services to work. Basically I was set up to fail by Fiserv, which was an absolute waste of my time, and I quickly knew it wasn't going to be a long-term fit for me.
I was complimented on my work and well-liked by my team members, but not once did I have a week where I hit any metric goal during my time at Fiserv (not in-office hours, not sapience hours, not delivery goals...which were supposed to be 98% success rate and thus impossible to achieve, especially with sh-t products). Early on, I just freed myself from caring about metrics and that was the only way my mental health did not suffer, and I do not regret that choice at all. They were paying me the same whether I hit metrics or not, and I could not be stressed out by the infantilizing concern that I wasn't at my desk for 7 hours a day or whatever it was at that time. The weekly "dashboards" that management would send me on metrics would go straight to my trash folder, unopened.
I survived a couple big rounds of layoffs somehow, but while I was already deep into my job search, I unsurprisingly received a "Needs Improvement" on my yearly review (because of metrics). It was about a month later I finally got a great job offer, and put in my two weeks notice.
Sharing my story in case it resonates with anyone who thinks they should leave but aren't sure they can - you should, and you definitely can. You can all do better than Fiserv, you got this.