Quick Answer

Low FPS in Mass Effect Legendary Edition on the RX 7900 XTX usually comes from forced V-Sync, an uncapped background process, or MSAA set too high, not from a weak card. Cap the framerate, drop MSAA to 2x, and confirm you are on the latest AMD Adrenalin driver (24.x or newer for the RX 7000-series). The game targets a smooth 60 to 144 on this GPU once those are set.

The Fix, In Order

  1. In the EA App, open the game's Properties and run Repair so file integrity is verified.
  2. Update to the latest AMD Adrenalin driver (24.x or newer for the RX 7000-series), then reboot. A stale driver is the single most common cause.
  3. Fully quit the EA App from the system tray and relaunch it as administrator; the service often hangs in the background.
  4. Disable the EA App overlay, the Discord overlay, and any FPS or capture tool that hooks the game.
  5. Set MSAA no higher than 2x and turn off any frame-generation overlay, which conflicts with the older engine.
  6. If ME1 specifically hangs at the logos, launch ME2 to confirm the install works, then re-verify ME1 files.

Game-Specific Quirks Worth Knowing

The three games behave differently. ME1 is the most fragile at launch and can hang at the logo screens; ME2 is the most stable; ME3 is prone to crashing on the opening cinematic when an overlay is active. The 24GB on the RX 7900 XTX is far more than this 2021 remaster needs, so memory is never the bottleneck. Keep your saves backed up before reinstalling, because a corrupted save can also trigger crashes that mimic a hardware fault.

FAQ

Does Mass Effect Legendary Edition use anti-cheat?

No. It is an entirely single-player remaster with no online component and no anti-cheat software. Any anti-cheat-looking error is really a launcher, overlay, or file-integrity problem. Fixing those clears it.

What driver should I use on the RX 7900 XTX?

Use the latest AMD Adrenalin driver (24.x or newer for the RX 7000-series). A clean driver install through the official app clears most launch and crash issues. Reboot after installing before you test again.

The game still will not launch. What next?

Verify files one more time, then move the EA App out of any aggressive antivirus quarantine and disable third-party overlays completely. If only one of the three games fails, the install is partly corrupt; reinstall just that title. A full backup of your saves makes this safe.

TIP

else, run Repair in the EA App and update to the latest AMD Adrenalin driver (24.x or newer for the RX 7000-series); that pair fixes the large majority of Mass Effect Legendary Edition problems on the RX 7900 XTX.