I have two Razer devices that I have been testing using the multi-device feature for the 2.4Ghz Hyperspeed USB connection. They are both on the supported list of devices, but when I connect them together I lose keystrokes if I am simultaneously mousing.
The devices I am using are:
- Razer BlackWidow V3 Mini Hyperspeed (on the latest firmware v2.01.01_r1)
- Razer DeathAdder V3 Pro (on the latest firmware v1.01.01_r1)
To reproduce this, you have to do the following:
- Connect the DeathAdder as a second device on the BlackWidow's 2.4Ghz USB dongle.
- Open a text editor (e.g. notepad).
- Type a few letters repeatedly while simultaneously moving the mouse in circles.
- You will notice many keystrokes get missed. Also, key down events get lost so the keys appear stuck "down" and will auto-repeat once you stop typing.
The reason why this is important is if you are playing a game and using the mouse for aim while using the WASD keys for movement, you will notice your movement is unresponsive and glitchy (your character will continue to move forward/left/right/back randomly).
To remove possible environmental/software issues I also tried the following:
- Repairing the second device doesn't fix the issue.
- Firmware updates don't help (had the same issue with stock firmware, and now the latest firmware)
- I tried a second computer and got the same results.
- Closing Razer Synapse also has no effect (you can reproduce the same glitch with Synapse closed).
Something interesting to note is that multi-device with this keyboard and mouse works fine if you pair in the opposite direction. Using the mouse's 2.4Ghz USB dongle to add the keyboard has no problem with lost keystrokes. I don't have an easy way to tell if it is prioritizing the keyboard and losing mouse events, but it seems fine.
I hope this thread helps folks who are frustrated that they are losing keystrokes when they have multiple devices paired. The quick fix would be to use your mouse dongle instead of the keyboard dongle.
Also, hopefully the Razer developers who work on the 2.4 Ghz USB dongle will read this thread. My guess is that it is just a firmware issue with the BlackWidow V3 Mini's USB dongle. It may need an update to work without conflict with a DeathAdder V3 mouse.