My previous motherboard died, so I replaced it with an MSI MPG B550M Gaming Plus, moved everything into a new case, improved the cooling, and replaced my old SSDs with a Kingston NV3. The rest of the system is a Ryzen 7 5700X3D, RTX 3080 Ti, and 32 GB of Corsair Vengeance DDR4. I performed a clean Windows installation and updated the BIOS, AMD chipset drivers, NVIDIA drivers, and SSD firmware.
Since the hardware change, Warzone and Hunt: Showdown have noticeably worse frame pacing. Average FPS is roughly similar, but the games feel inconsistent, with frequent microstutters and sudden drops. Even with an FPS cap, the frame rate can fluctuate instead of staying steady.
I have already confirmed that XMP is enabled, the RAM is installed in the A2/B2 slots, the GPU is in the primary PCIe x16 slot, Resizable BAR, TPM, and Secure Boot are enabled, and temperatures, usage, and clock speeds look normal. I have also tried different graphics settings, a fresh second Windows installation, stock and undervolted CPU settings, and the usual NVIDIA settings. What should I investigate next?
5 Answers
Since the problem started immediately after the motherboard replacement, I would not completely rule out the board or its firmware. Test with another compatible motherboard or PSU if you can, and reseat the CPU, RAM, GPU, and all modular power cables. A component can be seated well enough to boot while still behaving badly under load. Check frametime graphs and 1%/0.1% lows during the stutter instead of relying only on average FPS.
The most useful next step is to isolate the changed parts instead of continuing to adjust game settings. Temporarily install one of the older SATA SSDs and run the game from it. The Kingston NV3 is a DRAM-less drive that relies on host memory buffering, while your older drive may have onboard DRAM. That difference can matter for games that stream textures and assets during gameplay. Also check PCIe Link State Power Management and NVMe APST; disabling those temporarily can show whether the drive is entering low-power states and causing latency spikes.
Do a proper memory stability test, preferably overnight, and test each stick separately if possible. XMP being enabled does not prove the configuration is stable, especially since the two modules may use different memory chips. Try the system at stock JEDEC settings as well. If the stutters disappear, manually tune the DDR4 speed, timings, and voltage rather than relying on the board's profile.
It is also worth checking the frame-pacing chain: confirm Windows and the monitor are both actually running at 280 Hz, then test with G-Sync/FreeSync, V-Sync, and HAGS enabled and disabled one at a time. A common setup is G-Sync enabled, V-Sync enabled in the driver, and an FPS cap a few frames below the monitor's refresh rate. If the issue continues outside games, run LatencyMon and inspect network, audio, storage, and other drivers for DPC spikes; a faulty Ethernet or Wi-Fi driver can cause stutters that do not show up as obvious CPU or GPU problems.
A clean Windows install also means the shader caches are empty. Warzone and other modern games can compile shaders or stream assets while you play, which produces hitches even when the average FPS looks fine. Let the game rebuild its shader cache, then test again after several sessions. Clear and rebuild the NVIDIA shader cache if needed, and compare results with the game installed on the older SSD.
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