There are two approaches to virtual reality glasses. One is to integrate smartphone hardware into the glasses to create a wireless but not particularly powerful solution. The virtual worlds that can be experienced with such glasses are poor in detail, simply because a mobile phone processor does not have the power for opulent graphics. And then there are the “big” VR glasses for PCs and consoles, with which you usually hang by an “umbilical cord” on the playback device that takes over the complex computing work. Sony’s PlayStation VR 2 belongs to the second group – and has a problem.