The original PS4 doesn't support 5 GHz Wi-Fi, so if Smart Wi-Fi is enabled on your Super Hub, this is quite likely causing it issues. You need to disable this and run separate 2.4 GHz and 5 GHz bands and then connect the PS4 to the 2.4 band.
If you have a Slim or Pro, then I believe Sony included a newer wireless adapter in these models that does support 5 GHz.
Thanks for using the forums to get this issue with your PS4's WIFI connection looked into, I am sorry if this has been causing some frustration. I would be more than happy to look into this for you to see if it is an issue with your WIFI, of if your PS4's WIFI card might be the culprit 🙂
First of all, I would like to ask where your PS4 is in the home as well as the Hub? Are they in the same room, next room over or upstairs/quite far away?
When you're in the same roof as your PS4, do other devices have quite a slow connection?
Also, can I ask which Hub you have please? Hub 4, 3, 2AC etc.
We'll see where we need to go from here once you've replied 🙂