It is a very quick game, but at the same time, after a couple rounds it feels like second nature. It certainly plays faster than COD or the like, but I didn't find it stressful at all when I played it and with COD at times I do.
It's a different game and worth a try. Best advice I can give is to try the next testfire if it's possible for you.
It made me excited, but not nauseous or stressed as you are worried about.
Gotta figure out how to set these up lol.







