Agreed. nova4 can be charged with wire. It was still very smooth for a few days after the update, but then one day I suddenly played with a noise in the headset, especially when the game characters fought, it was the largest sound, like the current of Z, Z, Z, sound, and the picture was very slow, from the top left corner of the game assistant pulled out a look, CPU and GPU fast occupied! Frame count is only a dozen frames!