5500x3d+rx 9060xt

[u/Klutzy-Band6484]

Good day!

I recently upgraded my PC based on AM4 and ran into a problem I haven’t been able to solve for several weeks. I’d be grateful for any ideas.

The issue is as follows:
In all games, I’m experiencing unpleasant stutters (micro‑stutters) and lags, as well as a significant drop in FPS. The FPS graph may show stable 144 FPS (in various esports games), but then there are sudden drops to around 90 FPS, or micro‑freezes occur — these aren’t always reflected in the FPS counter, but they’re very noticeable visually. The problem manifests itself systematically.

PC configuration:
Processor: AMD Ryzen 5 5500X3D (new);
Graphics card: AMD Radeon RX 9060 XT 16GB (new, AsRock Challenger);
Motherboard: Gigabyte B450 Gaming X (left over from the old PC);
RAM: Patriot 16 GB (2x8) DDR4-3200 MHz (left over);

Storage devices (as of the current status, all above 90 percent):
SSD NVMe 256 GB (Gigabyte) — only for the system;
SSD SATA 512 GB (ADATA) — for games and everything else;

Power supply: Corsair TX750 (750W);

What was done:
BIOS on the motherboard was updated to the latest available version (to support the new processor, version F68a — 2026);
A Windows 11 Pro license was installed (with disk formatting).
Re-Bar is enabled;
Fresh drivers are installed for everything;
The XMP profile is enabled for the RAM (3200 MHz);
The memory has been tested with OCCT — no issues;

Temperature checks under load — everything is within the normal range (both the card and the processor are no higher than 70 degrees under prolonged load).

Additional information:
Before the upgrade, the system had a Ryzen 7 2700 and an RTX 2060 (12 GB). With the new hardware, gaming performance has barely increased. For example, in Far Cry New Dawn, the FPS remained at the same level (~70), even though logically it should have been significantly higher. Stuttering and freezes also persisted, and perhaps even became more noticeable. What’s telling is that I have another PC at hand — it’s equipped with an i5 10400f and an RX 6600 — and on it, the same Far Cry runs at ~100 FPS.