I'm not sure where to begin with the downside of being a TSR at Paycom. These positive reviews are from new hire training class that haven't taken on clients yet. The tenure of TSR's are UNDER one year at Paycom before leaving. My mental and physical health took a toll while I was here. There were days/nights that I would work over 12 hours at a time, and still wasn't getting all my work done. The company expects very unrealistic timelines and different "processes" are put into place every Friday during the department call - it's very unorganized. For instance, for timelines, TSR's have only 3 months to get out of a deal with training on products, and then they are expected to make sure their clients usage is very high to get out.
The culture at the company is none that I've ever see before. Sales sells the Paycom products (overpromises and then the TSR's have to break the news to the client that the product doesn't work the way that sales told them it would). My team has always said "TSR's make up for the sales teams mess". Sales tells the clients what they want to hear to make their commission check. It's that simple.
Before accepting the position, ask the recruiter what the biggest pain points are of the TSR job. See what they say, ask them about the tenure of a TSR.
Please do not put yourself in this situation, TSR's typically don't last more than a year here. TSR's and the team that they work with to configure the Paycom system with are always pointing fingers at whose fault it is that something hadn't gone right. I had a stable, great job and was so sold on the opportunity that the recruiter offered (money, car allowance, commissions, bonuses, $1 benefits, etc).