The selected build delivers stable performance for Assassin's Creed by pairing a capable modern CPU with a midrange GPU and efficient supporting components, directly addressing the engine's tendency to stutter in crowded historical cities without wasting budget on unnecessary high-end parts. The AMD Ryzen 5 9600X provides the strong single-core and multi-threaded performance needed to keep crowd AI, physics, and traversal calculations running smoothly, avoiding the frame drops common in the original Anvil engine during busy sequences. Its efficiency pairs well with the included Peerless Assassin cooler for quiet, sustained operation during longer play sessions. The SAPPHIRE PULSE Radeon RX 9060 XT 16GB offers more than enough graphics horsepower for the game's DirectX 9 visuals at their highest settings, handling draw distances and anti-aliasing without strain while leaving headroom for community mods that enhance textures or stability. This creates sensible CPU/GPU balance for a title that leans more CPU-heavy in dense areas yet still benefits from solid rasterization performance. The ASUS Prime B650-PLUS WiFi motherboard, 16GB of fast DDR5 RAM, and Kingston NV3 1TB SSD ensure quick loading of large city environments and smooth multitasking if using mods or background tools. Overall, the Montech X3 Mesh case with its RGB fans, combined with the reliable 650W MSI PSU, keeps the system cool and expandable while avoiding overspending on components mismatched to this 2007 game's modest requirements. This setup prioritizes practical stability for fluid parkour and stealth gameplay, letting you enjoy the historical immersion without the frustration of engine hitches that plague underpowered or poorly balanced systems.