The SH3 (its not super at all), is useless for gaming FULL STOP. PS3 only runs on 2.4GHz range.
I used to game on a PS3, now got a PS4 Pro, but I use my own router, and have the SH3 in Modem mode. This works great for me.
-- Red (VM SH2 AC Beta tester) Running on 350Mb VM service with SH3 in Modem Mode, with a ASUS RT-AC5300 router. With this setup I get Fantastic WIRED and WIRELESS Signals in my home. I dont work for VM. But I work in IT, and I know my tech. My advice is at your own risk.
The engineer did this at the very start, after a few days, and this caused nowm problems and he couldn't resolve them so told me to reset it again, which took 40 minutes, so I'm going to leave it as it is because I'll be leaving in July anyway.
It seems to be okay at the moment but we never had any issues at all when I was with Sky.
Due to the fact that the item wasn't supplied free like the ombudsmen instructed you to do so and that I've been lied to so many times, I'll not be with you when my year has finished, that's for certain!