Minimum specs are 'minimum' Did you expect it to run at 90fps max details? You should be happy it even runs on your 6 year old GPU, why did you buy a VR headset when you dont even have a good PC.
Dumbasses, GTX 970 runs this shit fine. Idk what tf is wrong with that guys card, but GTX 970 is definitely capable running a smooth VR experience from low to medium. Sometimes high depending on the game, not to mention the 970 handles overclocks like a champ
"minimum" by companies change per company, legally "minimum" specs only need to be capable of loading the game i.e. the main menu and nothing more. this is why you should never build a pc around min specs or expect games to work on min specs. most VR games need GDDR6 for its speed. expect anything less then a 1060 or RX 570 to run like shit if not unplayable.