# Nvidia GeForce RTX 5090 performance limitations > Live situation record from CLSTR: https://clstr.news/situations/nvidia-geforce-rtx-5090-performance-limitations > Updated: 2026-08-21T06:28:11.000Z. Sources: 3. Developments: 2. The performance limits of the Nvidia GeForce RTX 5090 have come under scrutiny through new software benchmarks and high-resolution gaming tests. Initially, the release of Nukemark, an early-access stress test built on Unreal Engine 5.7, demonstrated extreme resource demands. The benchmark utilizes features such as Nanite, Lumen, and Megalights, reportedly pushing the RTX 5090 to only 15 to 20 frames per second in its most demanding scenes while consuming up to 15 GiB of VRAM. Subsequent testing focused on the impact of high-resolution displays, specifically 6K monitors like the Samsung Odyssey G80HS. Results indicated significant performance degradation when transitioning from 4K to 6K resolution. In Cyberpunk 2077, frame rates dropped from 85 FPS at 4K to 42 FPS at 6K when using Ray Tracing Overdrive and DLSS Performance. In Crimson Desert, performance fell below 30 FPS at 6K resolution under cinematic settings, necessitating the disabling of Ray Reconstruction and the use of DLSS Balanced mode to maintain stability. ## Timeline ### 2026-08-21: Nvidia RTX 5090 struggles to maintain performance for 6K gaming Nvidia's RTX 5090 faces performance challenges in 6K gaming, with frame rates dropping significantly in demanding titles like Cyberpunk 2077 when moving from 4K resolution. 3 sources. https://clstr.news/cluster/nvidia-rtx-5090-struggles-to-maintain-performance-for-6k-gaming ### 2026-07-31: GeForce RTX 5090 pushed to 15‑20 fps by new Unreal Engine 5.7 stress test The Nukemark benchmark, using Unreal Engine 5.7, pushes a GeForce RTX 5090 to just 15‑20 fps, demanding up to 15 GiB VRAM and testing the limits of current GPUs. 2 sources. https://clstr.news/cluster/geforce-rtx-5090-pushed-to-1520-fps-by-new-unreal-engine-57-stress-test --- Cite as: Nvidia GeForce RTX 5090 performance limitations. CLSTR, https://clstr.news/situations/nvidia-geforce-rtx-5090-performance-limitations