Hi Epic. I’ve had a Theardipper 3070X CPU with an RTX FE 4080 for work for a few years.
I’ve always encountered strange problems in UE5 games, and sometimes even within the UE5 engine itself. Usually, characters in UE5 or games created with this graphics engine always or almost always have a flickering effect, which is truly annoying. Sometimes I have to give up playing.
I know it’s a CPU for work, not for gaming.
But I didn’t expect to encounter the same problem in UE5 5.6.
Do you think it’s because some instructions or programming code are missing for these work CPUs?
For what it’s worth, I used a Threadripper Pro 3975WX with a RTX 3090 for a long time, and it worked just fine in Unreal games and the Unreal Engine editor.
I would suspect graphics driver versions, or any kind of overlay or plugin/tool you may be using (chat overlays, screen recorders, frame rate optimizers, etc) and thoroughly examine those before suspecting the CPU.
Looks like a floating point calculations error. How are your GPU temps while playing? Are you sure your card isn’t overheating causing these glitches? Try to temporarily under-volt it and lower the power limit to see if it becomes more stable.
I agree with Raven, this looks a lot like the vertex locations GPU side are changing rapidly. I have experienced this with some driver issues and when my GPU was dying. In your case, the first thing I’d try is a fresh install of the GPU drivers, disable any other overlays, and make sure the GPU is seated nicely in the PCIE slot.
Could be marginal/bad RAM. Could be marginal/bad CPU. Could be marginal/bad motherboard. Could be marginal/bad PCI Express bus. Could be marginal/bad power. Could be marginal/bad GPU hardware. Could be some particular driver/piece of software that interacts poorly.
The only way to know for sure is to swap one component at a time until the problem goes away.
The easiest thing to start with is to buy a cheap internal driver, and install a fresh copy of Windows on it, plus the game, and play on that alone. If it doesn’t happen, it’s some software on your system. If it still happens, it’s hardware, and you have to start swapping pieces to diagnose it.
