Stuttering in vr hmd

Hello helpful folks, I recently started having stutters in a couple of my games maps in the vr preview in ue4, I’m not sure what started the stuttering, but I was working on some Booleans and a notification widget, both of which didnt cause stuttering the day before, I am getting a low frame rate around 30fps, whereas I need a framerate of 90fps, however the stuttering is probably not linked to this, I have tried using the console command stat unit to show framerate and it doesnt show up correctly and appears offscreen, so its entirely useless to me.

I would like to know how to tell what part of the code is causing the stuttering and low frame rate so I can correct it, I have tried to replicate the issue in another map unsuccessfully, it ran smoothly in a smaller map with and without enemy ai spawning.

It also ran smoothly in an earlier backup I have, I would prefer to work it out and find out whats caused the game breaking stutters as I have done quite a few hours of work since I last backed up.

any help would be greatly appreciated.

ok I solved the issue, for some reason changing the nav mesh to dynamic caused major stuttering in the hmd amongst a plethora of other bugs which were resolved by changing the nav mesh recast back to static, weird and frustrating bug and it took me over a week to find out what was causing it, hopefully someone can reference back to this post and save themselves a headache.