Corvega Factory lag. Advice?

[Mechanos]

Ok so.. looking for some advice on what to do, or what settings to tweak, to help with the massive lag I get at the Corvega Factory. First some info. Playing normally with my current settings, I get around 45-60fps in most areas. Honestly, I'm perfectly happy with anything over 30. However, the moment I get near the Corvega Factory town, and continuing on inside the factory, I get huge FPS drops, bottoming out at about 15FPS. At that point, my mouse look starts stuttering and nearly makes it unplayable. My current savegame is inside the factory, so I can quickly test new settings.

Currently I'm using High settings via the launcher, except with Godrays turned off, shadow quality/distance set to medium, lighting medium, and screen space/rain occlusion toggled off, as per the recommendations in a tweaking guide somewhere. After the lag started, I tried setting iShadowMapResolution to 8 in Fallout4Prefs.ini, and my FPS didn't change. I also downloaded the latest AMD Crimson drivers 15.30.1025, as AMD claims it helps with Fallout 4. Ironically it hasn't changed the FPS at all for me, at least while inside the factory.

Not sure what to try next. I've seen some mods/configs at the Nexus claiming huge FPS boosts, like one that dynamically changes your shadow settings based on your current FPS. Tempted to try it, but considering iShadowMapResolution didn't help anything, I'm not sure shadows are the problem. Halp pl0x?

[↓↓ They REALLY suck!↓↓]

Go to you My Games folder, open Fallout4Prefs.ini and set the below to 500.
fShadowBiasScale=0.5000
fDirShadowDistance=500

[Mechanos]

Heya. Thanks for the reply. Tried it just now. Still 15FPS. Gonna give ENBoost a try and see what happens.

Edit: No change with ENBoost either.

Edit2: Tried Shadowboost, which dynamically changes your shadow render distance in order to keep your desired FPS. Didn't help either.

[xTc]

Yeap nothing works. The modders at Nexus have been trying to figure out what the problem is, but still no clue. I tried multiple multiple things and none worked. Our only hope is that bethesda legit addresses the issue or someone finds a fix.

[Zlobsic]

Corvega factory is the lowest FPS place in the game for me. I got 30-33 FPS, while being on top of it and looking down. While in other areas i never seen anything lower than 45. Tested everything, im afraid only Bethesda can fix this, by patching the game.

[Human After All]

Its normal, this spot is very unoptimized. I guess the engine has a bottleneck itself
because Skyrim had this problem at release too. They patched it later.
(had a brand new GTX 580 back then and stable 60 fps was not possible until the patch)
There are spots in Fallout 4 where nobody has a good performance,
no matter what Pc you have.
There are benchmarks with 980Ti and Titan X cards and the latest CPUs
and even they drop down to 30, 35, 40 fps.
I have a I7 2600K 4,3GHz, GTX 980 Superclocked, 8 GB Ram
and my framerate drops down to 40 fps with shadow distance medium, godrays high,
everything else on ultra 1080p. Of course its worse with everything on ultra.

So this is more a problem of the engine itself.

[Mechanos]

Was starting to come to that conclusion myself after reading some other complaints about it. Now that I'm out of that area, the game is performing much better again.

[Uzi [OTG]]

If for some reason you are increasing FOV above default 75 degrees try going back to 75 degrees FOV.
I get away fine with 90 FOV on my rig (profile full specs) in all areas but when I tested
with 100 and 110 FOV in the areas like Corvega or Diamond City, etc frame rates
did take a big hit.

[Marshall]

For me, turning off "Godrays" solved problems with graphics, but that might be just me...

[Mechanos]

So in a different thread, someone linked me this, saying it might be CPU related.
http://gearnuke.com/fallout-4-heres-toggle-multithreading-pc-improve-performance/#

From what I understand, F4 has multi-threading turned off by default, and those console commands will turn it back on. Might help with Corvega and other lag areas, might not. Depends on what the bottleneck is. I'll try it next time I play and head back to Corvega, and report to you guys if my FPS is magically playable again.

Originally posted by Uzi OTG:

If for some reason you are increasing FOV above default 75 degrees try going back to 75 degrees FOV.
I get away fine with 90 FOV on my rig (profile full specs) in all areas but when I tested
with 100 and 110 FOV in the areas like Corvega or Diamond City, etc frame rates
did take a big hit.

I'm using 90. You wouldn't think that'd be that huge of an FPS killer.. but I'll go ahead and try going back to 75 again, just to see how much of a difference it makes. I can always set it back to 90 if I don't see much of an FPS increase.