Anyone else find their game downloads slower than it should? Im on wifi which probably doesnt help, but the speedtest within the PS4 shows correct speeds, but the downloads dont equate to the speeds it says im getting
They won't equate. I think there is a download speed cap in place on the PSN, to balance the demand on bandwidth. 16 odd Mbps I've estimated in the past. I've never seen it attain my full connection speed, unlike Steam which (on the other extreme) bogs down my connection by saturating it with the download. Youtube will stutter when I download from Steam, because it will hoover up the average 5MBps (40-50Mbps) every time. You can monitor that on the realtime download graph in the Steam download menus. No graph option on the PS4 to indicate the consistency as far as I'm aware, just a progress bar and percentage:
Reading online seems to be a common thing especially on wifi
You've answered your own question there to be honest. You can try making sure QOS is enabled within your router settings, but wifi is wifi; even home plugs add a delay in my experience.