Dropping which signal? WiFi? Antenna? If it’s your WiFi your referring to then what speed is your internet? What make and model is your TV? How far away is it from your modem and or router? Try running a check connection test on your Roku TV. Go to settings/network and run a check connection test. What does it say for speed (Mbps)? Did you try the 2.4GHz and the 5.0GHz? If it has an Ethernet port did you try that?