I'm experiencing an unusual stuttering problem.
I'm experiencing an unusual stuttering problem.
I've spent considerable time testing this. I even replaced several components to pinpoint the faulty one. Essentially, I'm dealing with an unusual problem I thought you might recognize. When I set the PC resolution to 4k at 120Hz for my LG CX, games stutter heavily. I've tested various cables, but they all cause the same issue. I'm running out of ideas. I've used a setup with an NVIDIA + Intel PC and an AMD + AMD system, using about 40% of my GPU. My cable link is here: https://www.amazon.com/CABLEDECONN-7680x...B00XIWAQKQ. Any guidance would be greatly appreciated.
Any ideas guys? Here is a video of what it, starts around the middle; The only thing that has been constant through my 2 builds is my TV I use as a monitor. I have confirmed its not the cable by testing my ps5, and series x cables. Literally everything in my PC has been replaced, going from Intel to AMD to Nvidia. New psu, new SSD, new power cables, ram, even a new case. I have tried every combination of Gsync on, off, fps limiter, power limit, freesync on and off etc. If it were my TV ( LG CX 55 ) would it be capturable on software like this? I am currently download black ops cold war, as thats the game its worst on. Everytime I aim down sight the game will stutter. However new call of duties dont do it at all - which leads to me believe maybe its not the TV but if not, then what? I have tried going from RGB settings to ycbcr420 8bpc, with limited, still happens. Even if that did fix it then im losing HDR on an OLED. I have checked the temp of the SSD the games run on, 50c. TV is in pc, game mode. Ram is running 3200. I have turned on and off all windows relation overlays, gpu power settings. Nvidia power is set to max performance. I have unplugged everything from the pc so just the hdmi, and power cables are plugged in and run a benchmark. If the new monitor doesnt fix it, I have literally zero ideas.
You explained your process in detail. I noticed you changed each piece of hardware individually, but what about the software side? Did you reinstall Windows from the beginning? I brought this up because I experienced similar problems at 1440p with 165hz, which was far below your connection speed but still caused noticeable stuttering. I moved from an older R7 2700X with GTX 1070 to a newer R7 7700X paired with RTX 4090 this week, hoping it would fix the issues since it was still quite outdated. Even with a very old Windows 10 installation—possibly upgraded from Windows 7 over time—I still faced problems. After spending about two hours, I replaced my SSD and the following day I performed a complete Windows 11 installation. Everything now runs smoothly, even after extended use and after reinstalling games. The transition involved a lot of work—migrating software licenses, importing config files, and reinstalling everything—but it was definitely worth the effort!
It was a good attempt. Which GPU are you using? Are you connected to the HDMI 2.1 port? What’s the TV input like? That’s clear—I’m sorry for asking, but not all connections reach full performance and manufacturers often cut corners. Also, could you try using Display Port?
Rtx 4090 connected to 2.1 is the right choice for me. I’ve purchased a budget 4K 144Hz monitor, which I’m using to test DisplayPort. The TV only supports HDMI, so it wouldn’t show up in capture tools if I had a high-end monitor.
Using Gsync or Vsync would mean the GPU pauses if it can't process more frames, which should be visible in capture tools but not at full refresh rates. For analog signals, I'm certain it's not the monitor, though modern systems often have some processing happening that could affect performance.
The tested DP output suggests several DisplayPort to HDMI 2.1 cables are available that might benefit your TV setup. You can find more options here: https://www.amazon.com/DisplayPort-Cable...0B292WK3R/