I removed my biggest PC bottleneck, and immediately found another

After upgrading from a Ryzen 9 5900X to the Ryzen 9 9800X3D, the CPU bottleneck on an RTX 4090 gaming rig was eliminated — only to reveal the GPU itself as the new limiting factor at 1440p with a 360Hz monitor. Even the flagship 4090 struggles to consistently hit high frame rates in demanding AAA titles and fast-paced shooters at ultra-high refresh rates. The RTX 5090 offers only a 12–15% FPS uplift at 1440p, making the $2,000+ upgrade hard to justify. The key takeaway: bottlenecks are inevitable and cyclical — the goal is to identify the weakest link for your specific use case rather than endlessly chasing perfection.