Tested, 100% confirmed, Crashing due to overclock

I’ve done some long-term testing on this, and I seem to have fixed all my crashing issues by disabling the XMP profile and disabling all overclocks in the BIOS.

Without fail, my PC would crash to desktop after about 15 minutes of flying without a message. Every now and again I would get the blue screen of death. But as soon as I disabled all my overclocks, this problem has disappeared.

MY RIG:
ROG Strix Z790-F

G.SKILL Trident Z5 RGB Series (Intel XMP 3.0) DDR5 RAM 16GB (4x16GB) 6000MT/s CL36-36-36-96

NVIDIA system information report created on: 12/17/2024 12:21:18
NVIDIA app version: 11.0.1.184
Operating system: Microsoft Windows 10 Pro, Version 10.0.19045
DirectX runtime version: DirectX 12
Driver: Game Ready Driver - 566.36 - Thu Dec 5, 2024

CPU: 12th Gen Intel(R) Core™ i9-12900K
G.SKILL Trident Z5 RGB Series (Intel XMP 3.0) DDR5 RAM 16GB (4x16GB) 6000MT/s CL36-36-36-96
Storage (5): SSD - 1.8 TB,SSD - 931.5 GB,+3 more

Graphics card
GPU processor: NVIDIA GeForce RTX 4080 SUPER
Direct3D feature level: 12_1
CUDA cores: 10240
Graphics clock: 2610 MHz
Resizable bar: Yes
Memory data rate: 23.00 Gbps
Memory interface: 256-bit
Memory bandwidth: 736.064 GB/s
Total available graphics memory: 49014 MB
Dedicated video memory: 16376 MB GDDR6X
System video memory: 0 MB
Shared system memory: 32638 MB
Video BIOS version: 95.03.44.40.94
IRQ: Not used
Bus: PCI Express x16 Gen4

The only way you can prove stability is by testing each system one by one. Sometimes a combination of test also brings back results, but this is very rare. If I want to run a full stability test I start with memory, CPU and then GPU.

Karhu is my goto for memory checking. This uses next to no GPU or CPU and will show errors that are purely memory related. It uses the same function as HCImemtest, only faster and a lot easier to set up.

I used to use IBT for CPU. However I have not had to test a CPU for a few years now. I think Cinebench is the default now.

Heaven is where I check GPUs. But tbh if the CPU and the memory are passing ok then it is a fair bet that the GPU is the issue.

I once had dodgy memory though that only ever showed errors when I ran 2 heaven tests at the same time and IBT. I found out it was the memory by changing the kit out. You can always get an outlier. There are no testing systems out there that can guarantee your stability 100%.

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Yeah it sucks I made a similar post about this. Came to the same conclusion. Saw in a post from Microsoft that they don’t want you to overclock which is a bit of a shame because the entry to play is so high in terms of hardware. it is what it is but I have to admit I am still doing pretty ok (60fps@1440) without it. With how much the devs have to put up with I am willing to admit my mistakes when I make them. Doesn’t matter how stable the clock is they state it right outright.

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What exactly did you change in BIOS? I have a very similar system to you and have been getting random CTD with no message as well. I disabled XMP already and just reflashed my BIOS.

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It’s not that they don’t want you to; it’s that doing so makes it much more likely to crash in unpredictable ways that they’ll not have any way to fix on the software end. :wink:

It’s a demanding game, which is both CPU-heavy and GPU-heavy, unlike most other software that exercises one or the other. It’s simply more likely to cause a system that’s “on the edge” to crash than other games.

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It would be helpful to know your specific motherboard make and model, the specific make and model number of your memory, and whether it was a 2x32 GB or 4x16 GB setup. There may be a conflict with your setup that doesn’t allow full speeds. AMD is really particular about this, but Intel also has limits that can impact stability when trying to run full XMP speeds and timings.

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Simply return your CPU to normal to stop it from overclocking. Additionally, make sure to disable your XMP profile.Verify that it saves your settings because I’ve discovered that occasionally these settings don’t save correctly. If this happens to you, simply reset the BIOS back to the original settings.

ROG Strix Z790-F

Core i9-12900K Unlocked

G.SKILL Trident Z5 RGB Series (Intel XMP 3.0) DDR5 RAM 16GB (4x16GB) 6000MT/s CL36-36-36-96

This problem only happens with MSFS 2024.

If it is a RAM issue, disabling XMP entirely is probably unnecessary.

Instead, try re-enabling it and lowering the speed until you find stability. I have 4x 16GB DDR5 6000, but was getting crashes and BSODs with the default XMP presets. It’s absolutely fine at 5200 however.

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Very true.

I will give this shot Thanks :thinking:

I don’t overclock my CPU, but I do undervolt and change my CPU vCore Load Line Calibration (LLC) from AUTO to Turbo. LLC regulates voltage under load. The best setting depends on a lot of factors.
Watch this video if you want to understand it better.
I’ve never had to disable XMP.
I don’t have CTD’s.

Gigabyte X670E AORUS Pro X
Ryzen 7950X3D
G.Skill Trident Z 64GB (2x32GB) DDR5-6400/CL32

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I have been running an overclock on my CPU since the games release and have had very few CTD. Any CTD I have usually been able to attribute to an aircraft, add on or scenery in my community folder. I also thought it was my overclock or more specifically the number of cores and threads on my CPU. After doing much testing and thinking it was the CPU and MSFS 2024 not utilizing all my cores and threads, I was actually wrong. My Game just did not seem to want to start all the time over the first few weeks. I reinstalled to default location and it is okay now.
My motherboard is an Asus Rampage VI Extreme Encore X299.
I have an 18 core 36 thread i9 1098 XE unlocked CPU.
I run 64GB (4x16) of G Skill Trident Z Royal DDR4-4000 memory
My graphics card is a RTX 4090 MSI liquid cooled Suprim
I do not use XMP but I am currently running 14 cores and 28 threads all at 4.7ghz and have turned Hyperthreading on as Microsoft and Asobo have said that MSFS 2024 should use all cores and threads. I have 5 nvme drives totalling 12GB storage.
I do not get CTD and the sim runs very smooth.
The only reason I disabled some of my cores is that I play DCS World as well and their Multithread doesn’t like CPUs with more than 32 threads.
I will probably go to 16 cores and 32 threads all at 4.7ghz but I have been doing a lot of other testing in MSFS 2024 at the moment.
I am quite confident that the simulator will run overclocked as it now starts every time with no problems and runs well despite all the various bugs people are encountering. I hope you can get your CPU speed back as I always feel these demanding sims benefit from a good boost.

Looking at the QVL for your motherboard for compatible memory on both the Asus and G.Skill website, the only 64 GB compatibility listed is for a 2x32 GB setup. At the Asus site, it does list some Kingston 4x16 GB kits that can run up to 6000 MTS, and both Kingston and Corsair kits at 5600 MTS, but nothing at all from G.Skill. You can verify it here for the Asus website. Just make sure you filter by your processor because a 13th or 14th gen CPU will have slightly different results.

Sounds like this is down to a basic compatibility issue. If you want to run a four stick system at full speed, you will need to get a compatible kit to replace your current one. Or you could pull two sticks out of your current system as a test and try to run it at full XMP speeds in a 2x16 GB setup. If that works and is satisfactory for you, you could just sell the unused sticks to recoup some of your money.

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I posted exactly this fix back only a few days after launch. Basically, got laughed at. But it worked for me.

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Or just run the ‘incompatible’ 4x 16GB at slower speeds, like I do with very similar specs.

That’s why I suggested it as a test. When running outside the published compatibility specs, there’s no way to know exactly what the best option will be without testing different configurations because every system is different.

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I missed ‘at full speed’, even though it was in the text I quoted. Apologies :person_facepalming:

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And I didn’t catch your mistaken reference, so it’s all good. I thought you meant running the 4 sticks between base and full XMP speeds, which is also a possibility that may be better than 2 sticks at full speed with less capacity.

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Thank you so much for this information. I think it actually really helps me confirm something here. So I was having problems when I added two more sticks of 16 GB. They all have the same exact timings, but I did a BIOS update, and it worked beautifully. But after the last Windows 11 24h2 update, I’ve been having nothing but problems.