insane low fps on high end pc

i found a new glitch if you load up vive craft mod on a vr headset after 4muinits 54 seconds exactly your game will crash and u will go from getting 2000fps to not even getting to 100 fps

i don't know how to fix the glitch and i will now stop playing Minecraft until i get a new pc and the glitch is fixed 

kind regards MrMookies