Eliminate CCTV Lag

I need help to stop lag on my CCTV screen. Currently, all cameras are connected via Wi-Fi, and the CCTV screen is also connected to the internet through Wi-Fi. Key Requirements: - Supply and install... (Budget: £20 - £250 GBP, Jobs: CCTV, Network Administration, Network Engineering, Troubleshooting, WiFi, Wireless, Wireless Network Security Analysis, Wireless Site Survey)