Try rebuilding databse on PS4.
Have your PS4 turned on in the XMB. Then press and hold the power button until you COMPLETELY shut off the console.
Next PRESS and HOLD the power button again until you hear 2 BEEPS on the machine. Then let it go. SAFE MODE should pop up. make sure you hard plug your controller, (since safe mode shuts off the wireless) then finally go to where it says "rebuild database". It'll restart console then take you back to XMB. Load up BLOPS4 and see if this remedies.