4GB minimum (8GB highly recommended for 4K editing and 3D titles).
While it was a minor update, v10.5.4 was critical for many editors. Its primary purpose was to resolve exporting issues related to specific macOS language and region preferences. Final Cut Pro Free Download v10.5.4
A Metal-capable graphics card with at least 1GB of VRAM for 4K work. 4GB minimum (8GB highly recommended for 4K editing
Fixed playback and export crashes when working with HEVC and H.264 files. Final Cut Pro Free Download v10.5.4
To run v10.5.4 effectively, your Mac should meet or exceed these specifications: Minimum macOS 10.15.6 or later.