Happen to me sometime in a tunnel or vent, we just need to use jump key to move in further. That's all.

its seems if vsync is off you cant go though the vents for some reason

im completely stuck on the grate in the vent

Originally posted by DARKLAW316:

im completely stuck on the grate in the vent

Turn on Vsync. No clue why it works and it shouldn't, but I got completely stuck in the vent too over the grate part, but once I turned on V-sync, I could walk over the rest of the vent.

Turn on VS

if you turn V-Sync on and it still doesn't work try Auto V-Sync or I had to go into the nvidia control panel and tweak the 3d settings max fps 60 and v sync on

I had the same thing but thankfully I just tried a few times and managed to get past it. Had the same thing a bit later on in another area. I just backed up and tried again and again several times until I got through.

It's stupid that it is there though

Can get through most of the vent by Jumping but right at the end I'm absolutely stuck. Tried tinkering with the v-sync settings even opening nividia panel and changing settings still no luck.

Same thing happened to me. So I gave it a thumb down.

same thing here. stuck in the vent, nothing seems to be working

Hello, Had the same problem my fix is just turn off fullscreen and whole vent is clean for me now.

but really strange is my spamming method worked for Non Campaign +, but my second playthrough is totally bugged.

So, I was having the same trouble, i tried somethings that i saw in this forum but still no luck, after that a realized that there is a pattern to this bug, i think it happens because of high frame rates or graphics, try turning v-sync on, setting your fps at 60 on your gpu panel, putting the game in windowed mode and turning all grapichs into low, also, disable dynamic decals and put your fov at minimum.
Then after that try jumping on the parts where you get stuck, luckly this changes will unstuck you.

Can't fix the bug. I have tried all the settings
VS on/off
FOV reduced to zero
Window mode
Shame, I was having a good time.

If anyone is still playing this game and having this issue with the vent here is the solution that worked for me. This was done on NG+ that seems to be worse then new game.

1) Put game into windowed mode
2) Turn V-Sync on (Not auto)
3) Go to your monitors settings and change your refresh rate to 60hz.

You still have to jump a little bit to get over the lip like the earlier vents but after doing all that I was able to clear it just fine. Change all your stuff back to the way it was and continue playing.