Fallout 4

Fallout 4

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Does anybody here know anything about iFPSClamp=60
So, obviously I've already Googled this, but I didn't find what I was looking for.

I'm able to maintain 60 fps easily, but I'm getting micro-stutter. Not stutter. But micro-stutter. And it's seriously annoying.

The command line iFPSClamp=60 completely removes the stutter, yet apparently it has some issues. I've encountered one of those issues - namely, the vault doors wouldn't open when I initially left Vault 111. I was able to solve the problem by removing the command line, and loading a previous save.

It just sucks that I might not be able to use this command, which really does make the game run ultra smooth for me. (I have two GTX 980s, btw, and a Gsync monitor).

Does anybody know anything about this command?
Last edited by Francis_Mallman; Dec 21, 2015 @ 4:36am
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Showing 1-14 of 14 comments
Francis_Mallman Dec 21, 2015 @ 5:28am 
Originally posted by Neb9:
Are you running SLI?

Yup. But please don't tell me the micro stutter is the result of SLI, because it isn't.
Last edited by Francis_Mallman; Dec 21, 2015 @ 5:30am
Sli CAN introduce micro stutter.......
FINSullivan Dec 21, 2015 @ 5:50am 
Have you tried borderless fullscreen? Fixed it for me.
I have no idea what is causing it and why using borderless fullscreen gets rid of the problem at least for me it did.
Almost same type of stutter i had in Vermintide but in that case i had to remove in-game vsync and enable it on nvidia controlpanel. In Fallout 4 having vsync on in-game or on nvidia controlpanel made no difference.
Francis_Mallman Dec 21, 2015 @ 7:22am 
Originally posted by DopeOxide:
Sli CAN introduce micro stutter.......

This isn't a thread about SLI.
Originally posted by Jocko:
Originally posted by DopeOxide:
Sli CAN introduce micro stutter.......

This isn't a thread about SLI.

He has a Sli rig it COULD be apart of his problem
15543641354361 Dec 21, 2015 @ 8:53pm 
iFPSClamp=60 addon line in faloutpref.ini is supposed to remove the 60 fps cap of the game, if im not wrong.
it's known issue that the game does not support higher fps than 60. Does not support means you still can play but weird thing can happen like a door who don't open.

The game engine does not work properly if more than 60 fps.
Last edited by 15543641354361; Dec 21, 2015 @ 8:55pm
ToxicKookie Dec 21, 2015 @ 9:35pm 
Originally posted by Toto444:
iFPSClamp=60 addon line in faloutpref.ini is supposed to remove the 60 fps cap of the game, if im not wrong.

That's the thing. You are wrong. It forces the game to run at 60. If it drops below 60 with that line added to the ini you get massive slowdown. As mentioned, it also has other side effects, such as vault and electronically locked doors bugging out. Also if you use the vault door button with that line added it bugs VATS so it won't activate.
Last edited by ToxicKookie; Dec 21, 2015 @ 9:37pm
Tizferatu Dec 21, 2015 @ 9:43pm 
Originally posted by ToxicKookie:
Originally posted by Toto444:
iFPSClamp=60 addon line in faloutpref.ini is supposed to remove the 60 fps cap of the game, if im not wrong.

That's the thing. You are wrong. It forces the game to run at 60. If it drops below 60 with that line added to the ini you get massive slowdown. As mentioned, it also has other side effects, such as vault and electronically locked doors bugging out. Also if you use the vault door button with that line added it bugs VATS so it won't activate.

Yeah don't use iFPSClam at all (found that out the hard way).

Use iPresentInterval = 0 and vsync in the drivers (if you're aiming for fps above 60 so the engine doesn't bug out) or use the driver setting to lock fps to 60.

The engine will go nuts if FPS is above 60 and vsync is disabled (you don't want it above 60 on a 60 hz monitor anyways, if that's what you're running).
Francis_Mallman Dec 21, 2015 @ 9:47pm 
Originally posted by ToxicKookie:
Originally posted by Toto444:
iFPSClamp=60 addon line in faloutpref.ini is supposed to remove the 60 fps cap of the game, if im not wrong.

That's the thing. You are wrong. It forces the game to run at 60. If it drops below 60 with that line added to the ini you get massive slowdown. As mentioned, it also has other side effects, such as vault and electronically locked doors bugging out. Also if you use the vault door button with that line added it bugs VATS so it won't activate.

That's right, you can't open vault doors.

I'm wondering what else gets broken as the result of this line being added? Because, for me, the game is just wicked smooth with that line added. Without that line in there, I have terrible micro-stutter, which I can feel, rather than see.

Honestly, the game is just SO fluid with that line in there. I really can't see myself playing without it. I'm just wondering if I'm going to be able to complete the game now.

I made it out of Vault 111, by re-starting. And there was another Vault I had to re-enter and play through again, for the same reason (because the vault door wouldn't open).

Oh well.
Last edited by Francis_Mallman; Dec 21, 2015 @ 9:48pm
ToxicKookie Dec 21, 2015 @ 9:55pm 
Originally posted by Jocko:
Originally posted by ToxicKookie:

That's the thing. You are wrong. It forces the game to run at 60. If it drops below 60 with that line added to the ini you get massive slowdown. As mentioned, it also has other side effects, such as vault and electronically locked doors bugging out. Also if you use the vault door button with that line added it bugs VATS so it won't activate.

That's right, you can't open vault doors.

I'm wondering what else gets broken as the result of this line being added? Because, for me, the game is just wicked smooth with that line added. Without that line in there, I have terrible micro-stutter, which I can feel, rather than see.

Honestly, the game is just SO fluid with that line in there. I really can't see myself playing without it. I'm just wondering if I'm going to be able to complete the game now.

I made it out of Vault 111, by re-starting. And there was another Vault I had to re-enter and play through again, for the same reason (because the vault door wouldn't open).

Oh well.

The other effects of that command are the ones I mentioned in my previous post.

I completed the game with it enabled, so it is possible, but you will need to use console commands to do a few things. Any time you need to get through a vault or electronic door you will either have to use "tcl" in the console, which enables noclip so you can walk through solid objects, or you will need to open the console, click on the offending door/object, and click on it so it shows it's ID. You then type disable and the door/object will disappear.
Francis_Mallman Dec 21, 2015 @ 10:16pm 
Originally posted by ToxicKookie:
or you will need to open the console, click on the offending door/object, and click on it so it shows it's ID. You then type disable and the door/object will disappear.

Could you re-phrase this for me, or unpack it a little. I'm not following you here?
ToxicKookie Dec 21, 2015 @ 10:27pm 
Originally posted by Jocko:
Originally posted by ToxicKookie:
or you will need to open the console, click on the offending door/object, and click on it so it shows it's ID. You then type disable and the door/object will disappear.

Could you re-phrase this for me, or unpack it a little. I'm not following you here?

Okay. Say you've got a door in front of you and it won't open. type (without the quotations) "~" and then type "tcl". This will allow you to walk through any object in the game as though it weren't there. Alternativly you can type "~" then click on the object that won't open with your mouse. This should display an ID number in the center of the screen. As long as the number is displayed all console commands apply to that object. So with the number displayed on screen type "disable". This will remove the object, be it a glitched door, a lamp post, or even a character.
Francis_Mallman Dec 21, 2015 @ 10:32pm 
Originally posted by ToxicKookie:
Originally posted by Jocko:

Could you re-phrase this for me, or unpack it a little. I'm not following you here?

Okay. Say you've got a door in front of you and it won't open. type (without the quotations) "~" and then type "tcl". This will allow you to walk through any object in the game as though it weren't there. Alternativly you can type "~" then click on the object that won't open with your mouse. This should display an ID number in the center of the screen. As long as the number is displayed all console commands apply to that object. So with the number displayed on screen type "disable". This will remove the object, be it a glitched door, a lamp post, or even a character.

Thank you.
omegazeda Dec 21, 2015 @ 10:49pm 
Don't clamp it to 60, unless you're certain that you can get at least 59 fps.
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Date Posted: Dec 21, 2015 @ 4:35am
Posts: 14