Having same issue here, however I have apple devices (apple tv 4 and a macbook) connected around the ps4. I've heard that Apple devices interfere in some way with the ps4 wifi connection. But these drops are super random and crazy. While netflix still running on tv my ps4 is unable to keep connection going on specially with COD servers. I haven't been able to find an effective solution, but I think all is left is to go wired.