DLSS reveals CPU bottlenecks on fast GPUs

Nvidia DLSS upscaling allows an RTX 4090 to maintain high GPU usage at 1440p by internally rendering games at lower resolutions like 960p. This reduction in render resolution exposes CPU weaknesses because the system becomes more dependent on processor speed rather than graphics card power. Users observe that frame generation masks underlying stutter issues caused by unevenly paced frames fed from a slower central processing unit instead of fixing them.