When Quake Champions was announced at E3 2016, it was only revealed that it will be coming to the PC. id Software has now explained why the game is a PC exclusive.
During an interview with Gamespot, creative director Tim Willits said:
It’s everything from input sampling of the mouse to making sure that your monitor refresh rate is fast enough. Because even with Quake Live, we have found throughout the years that going from 30 to 60 is huge, but even 60 to 120–is noticeable
He went on to say that the refresh rate is the reason why it’s a PC exclusive because there are no limitations. However, he says that the game will still work on a variety of PCs.