UE5 and i9 13900K

[Toran Blackwater]

Got an i9 13900K and an RTX Card (30xx, 40xx)? Get instacrashes, weird out of VRAM errors before you even see a title screen?

After some other game's forum hint, I downloaded Intel Extreme Tuning Utility and reduced the default Performance Core Ratio from the default of 55x (5.5GHz) to 54x (5.4GHz). Troubles gone.

Might work for you too, might not work for you. Worth a try.

Others suggest to disable E-Cores in BIOS (which I did not).

Performance Forest Area after the 1st Vestige (Abandoned Redcopse):
4K (2K with DLDSR), Ultra, DLSS Quality: 48-70 FPS - even with 48 FPS it feels rather smooth with Gsync.
2K Ultra, DLSS Quality: 70-90 FPS

At which area things get ugly, performance-wise?

Full System:
i9 13900k, Gigabyte Aorus Z790 Master, 2x16 GB DDR5 GSkill Trident Z5 (no RGB crap) 6Ghz, MSI RTX3080ti Gaming Trio X, Soundblaster Z, WD Black SN 850X 4TB M2, Corsair HX850 Platinum PSU (850W)

[Kashra Fall]

You only need to disable E cores if you're on Windows 10. Windows 11 with E cores is a good thing, windows 10 with E cores is not, because windows 10 cannot use E cores.

[geryboy85]

ok interesting no issues with Zen 3. 5900x.

[Jrm]

I posted in 3-5 threads since the release of this game and other Ue5 games too about the 13th gen issues.

[Smokey the Bear]

So you underclocked your cpu. Okay.

[Toran Blackwater]

Originally posted by Smokey the Bear:

So you underclocked your cpu. Okay.

Yeah, the things you do to run crappy UE5 titles... At least I can play without crashes.

Originally posted by geryboy85:

ok interesting no issues with Zen 3. 5900x.

Which is not the point of the post, Holmes.

Originally posted by <XS>Jrm:

I posted in 3-5 threads since the release of this game and other Ue5 games too about the 13th gen issues.

And like this one lost in oblivion I guess? :D

[Arc]

It's less about seemingly "crappy" UE5 and more about that these CPUs are not stable under load.
If downclocking helps, the clocks were not stable to handle te load.

[Toran Blackwater]

Originally posted by Arc:

It's less about seemingly "crappy" UE5 and more about that these CPUs are not stable under load.
If downclocking helps, the clocks were not stable to handle te load.

Perfectly stable in Cyberpunk 2077, Forza Motorsport 2023, MSFS, Spider-Man Miles Morales and ANY other game that isn't UE5...
And where is the ♥♥♥♥♥♥♥ load on start-up, eh?

[La Belette]

Can you share soem screenshot of what you changed in Intel Extreme Tuning Utility ? I have some core at 58x, some at 55x, did you change everyone manually or is there a global option ?

[La Belette]

Okay nvm i saw it, i was in advanced mone when the option is in compact mode. Crazy thing is now i crash when loading shaders.

[nepnep]

Originally posted by Smokey the Bear:

So you underclocked your cpu. Okay.

It's not actually a "underclock" most motherboard manufacturers violated Intel spec for the 13900K and set the P core multiplier to 55 instead of 54. Some even went far enough and violated it for the E cores as well. EVGA did 4.4ghz for the E cores instead of 4.3ghz.

[La Belette]

Okay, even with the 5,4 tricks, sometimes i stil got the not enough VRAM error. IT alternate between Fatal error crash from loading shaders, to not enough VRAM error

[Arc]

Originally posted by La Belette:

Okay, even with the 5,4 tricks, sometimes i stil got the not enough VRAM error. IT alternate between Fatal error crash from loading shaders, to not enough VRAM error

Tune it more till it gets stable.
if it won't get stable at like 4.5GHz, check your DRAM speeds and downclock those.

[Toran Blackwater]

Originally posted by nepnep:

Originally posted by Smokey the Bear:

So you underclocked your cpu. Okay.

It's not actually a "underclock" most motherboard manufacturers violated Intel spec for the 13900K and set the P core multiplier to 55 instead of 54. Some even went far enough and violated it for the E cores as well. EVGA did 4.4ghz for the E cores instead of 4.3ghz.

Thanks for the insight! Damn, I never even bothered to check as everything else ran smooth...
From the Intel i9 13900k page:
Performance-core Max Turbo Frequency 5.40 GHz
Efficient-core Max Turbo Frequency 4.30 GHz
(https://www.intel.com/content/www/us/en/products/sku/230496/intel-core-i913900k-processor-36m-cache-up-to-5-80-ghz/specifications.html)

[Offence]

Originally posted by Toran Blackwater:

Originally posted by nepnep:

It's not actually a "underclock" most motherboard manufacturers violated Intel spec for the 13900K and set the P core multiplier to 55 instead of 54. Some even went far enough and violated it for the E cores as well. EVGA did 4.4ghz for the E cores instead of 4.3ghz.

Thanks for the insight! Damn, I never even bothered to check as everything else ran smooth...
From the Intel i9 13900k page:
Performance-core Max Turbo Frequency 5.40 GHz
Efficient-core Max Turbo Frequency 4.30 GHz
(https://www.intel.com/content/www/us/en/products/sku/230496/intel-core-i913900k-processor-36m-cache-up-to-5-80-ghz/specifications.html)

Broken link.

[Offence]

I fixed my crashes by changing from XMP I to XMP II for my ddr5 6000 mhz ram , didnt' have to touch anything CPU related and I own a 13900KF.