Is RTX 5090 D hitting a bandwidth wall in Horizon?
When the vegetation gets dense, my frame rate plummeted from 140 to 70. It's wild that even with a top-tier card, you still hit these walls. Despite the 24GB of GDDR7, I noticed the memory bandwidth utilization dipping by 15-22% in specific 4K scenes. I tried various 'enhancement' modes in the driver, but that just introduced screen tearing, which I couldn't stand. I went into the NVIDIA Control Panel, set Texture Filtering Quality to 'High Performance', and dialed DLSS sharpening to 65. RTSS showed frame times tightening from an 8-25ms swing to a steady 6-11ms. I overshot the sharpening at first, causing some weird chromatic aberration on edges, so I backed it off to 60. Temps are a cool 62-68℃. It's finally performing as expected, though the driver settings are a bit counter-intuitive.
