I understand you are having disconnection issues with your Razer Ornata V2 and Razer Deathadder V2. No worries, let me help you.
Please try plugging the keyboard and mouse directly into the computer, and not into a USB hub. If they are already plugged directly into the computer, try a different USB port. If the issue persists, please send me a private message with your serial numbers so I can check on my end and explore a potential solution.