Thanks for trying. Here are some other suggestions:
- Repair EA AntiCheat. This can be done by going to your FC 26 install folder. Run the file _Installer/EAAntiCheat/ and choose repair
- Add exclusions in Windows Security for FC26.exe, the EA AntiCheat folder and EA App
- Disable any overlays or background tools. Discord overlay, Steam overlay, GeForce, MSI Afterburner, monitoring, FPS or OSD tools
- Run the EA App, FC 26.ex and EA AntiCheat installer as an administrator
- In the EA App, hit Repair for FC 26
Let me know if any of these help. Thanks!