Issues with high latency, stuttering, and crashes are occurring.
Issues with high latency, stuttering, and crashes are occurring.
I recently assembled a brand new PC using these parts: CPU: AMD Ryzen 7800X3D, Motherboard: MSI Pro X870-P, RAM: Corsair 32GB 6000Mhz, CMOS: CMH32GX5M2B6000Z30K, Cooling: Noctua DH-15, Graphics: Gigabyte Aero 4080, SSD: WD Blue SN5000 4TB (M.2), Power Supply: EVGA Supernova P6 80 Plus Platinum, Monitor: Alienware AW3225QF 4K 240hz paired with Benq GL2450H, Case: Fractal North XL, OS: Windows 11 Home, purchased from a retailer.
I’m experiencing severe kernel responsiveness problems. Before the OS even starts, I sometimes see full screen artifacts (though not always). The real issue begins once I log in—system feels extremely slow, almost freezing, with the mouse moving sluggishly and programs running poorly. This is especially noticeable when playing YouTube videos. When using the monitor, temperatures stay well under 70°C, yet performance drops drastically. The GPU usage stays between 0 and 1%, which shouldn’t indicate a problem.
LatencyMon displays red lines during these events. I’ve tried BIOS updates, fresh OS installs (twice), driver and chipset updates, swapping RAM to a model listed on the QVL, and using HardwareMonitor to confirm low temps. Even with Chrome open, the system feels almost idle. Benchmarks show no issues with RAM, but I replaced it anyway.
I ran WhySlow which flagged kernel and app responsiveness as critical, and LatencyMon confirmed the same across the board. I disabled FTPM 2.0 in BIOS, changed power plan to high performance, updated firmware, and even tried running only the 4K monitor. Windows maintains its refresh rates, but performance remains inconsistent.
Benchmarks with UserBenchmark and Superposition Benchmark showed mixed results—rough at first, but improved significantly after a few runs. Now, latency is barely noticeable, yet LatencyMon still warns about long-running DPC routines in drivers.
I’m really frustrated and need help resolving this.
Additional points I’d like to mention: 11. Tested running on Ubuntu 12. Tried turning off hyperthreading. P.S. You don’t have to install Ubuntu onto the hard drive; you can run it from a Live USB. You might also use the toram feature to load the whole OS into RAM, which boosts speed.
I'll attempt this again when I have time. The previous step of deleting the GPU didn't resolve the problem. After reinstalling it, the issue reappeared—not complete red-lines everywhere, but a warning from LatencyMon. Occasionally these alerts shift due to driver updates. For example, a prior warning mentioned the suspected driver was linked to networking.