I agree that the current fees that the exchanges charge are quite high, a new exchange should (obviously?) have cheaper fees.
The website loads pretty fast for me (less than 0.5 seconds - I use gigabit fiber) and the order execution is even faster, right now I'm using a $5 VPS with 2 CPUs and 4 GB of RAM and the platform is processing ~20 orders/second with 50% CPU utilization. Maybe it's your internet connection?