Was it the first heist, where you escape through the tunnels in motorcycles? I remember having an insanely tough time at that section when I played the game for the first time on XB360.
I chose the option with the driver that gave the crew souped up street motorcycles for the first try because fast bike go vroom. I kept running into shit in the tunnels though because I was too fast. Attempted that section several times before I finally broke through the other side of it, and there wasn't a sense of accomplishment when I finished. I was just annoyed with the mission and relieved it was over. When I played it on pc years later, I chose the other driver and had a fun time in the runnels.
The other diver gives you dirt bikes, and that's the one you want. So much easier, and you actually get more of a payout at the end because one of your crew wipes out in the tunnels with the fast street motorcycles, just like I did probably 100x ten years earlier.

