Quick Answer

GTA 6 low-FPS claims on RX 7900 XTX are not measurable on PC yet, because the PC version is still unannounced as of 7 June 2026. The right fix path is to prepare a baseline: default AMD Adrenalin default profile, 1080p or 1440p target, FSR or DLSS only after native testing, and a 60 fps target for desktop GPUs or 30 to 45 fps for handhelds.

Set A Baseline Before Tuning

Start with the RX 7900 XTX at stock settings and test a known open-world PC game in the same resolution you plan for GTA 6. Desktop cards should be checked against 1080p High, 1440p High, and one upscaling preset; handhelds should use 720p or 800p with a 30 fps cap. This gives SA buyers a fair read before spending in the R18,000 to R28,000 graphics-card tier.

Settings That Usually Move FPS

Heavy settings are resolution, ray tracing, crowd density, shadows, reflections, and upscaling quality. Keep VRAM use below the 24GB VRAM limit, run from NVMe storage, and set Windows power mode to high performance for the test session. A 144Hz screen does not require 144 fps in a story game, but it does make frame pacing problems easier to see.

Driver And Power Checks

Reset the AMD Adrenalin default profile, remove old per-game overrides, and check that the display is not locked to 60Hz by Windows. On laptops and handhelds, plug in the charger and use the correct performance mode; on desktops, check PCIe power cables and PSU capacity. If GTA V or Red Dead Redemption 2 already struggles, fix that first because GTA 6 will not be lighter.

FAQ

What FPS should a RX 7900 XTX target?

Use 60 fps as the desktop starting target and 30 to 45 fps for handhelds. Final GTA 6 numbers must wait for the real PC build.

Should I buy new hardware before GTA 6 launches on PC?

Only buy now if your current games already miss your target. Waiting for official requirements is the cleaner decision for one game.

Which upgrade matters most for low FPS?

At 1440p the GPU usually matters more, but 32GB RAM and a fast NVMe also help open-world smoothness. A RX 7900 XTX should be judged with the full platform visible.

TIP

Buyer Check

Before buying in the R18,000 to R28,000 graphics-card tier, write down the exact error, driver branch, temperature peak, and test game. That note is more useful than a random part swap.