The RTX 5090 is the fastest consumer GPU available, so the real question for Sons of the Forest is not whether it runs, but how far past your monitor's refresh rate it goes at 4K.
Quick Answer
The RTX 5090 runs Sons of the Forest at 4K maxed at around 90-130 fps native, rising past 140 fps with DLSS, the resolution where the card belongs. The dense foliage finally gives the GPU genuine work.
4K Performance
At 4K maxed, the RTX 5090 holds Sons of the Forest around 90-130 fps native, where the game's dense foliage and lighting finally stress the GPU. This is the resolution that justifies the card. Enable DLSS Quality and frame rates climb past 140 fps with minimal image loss.
DLSS And Co-Op
For the smoothest 4K experience, enable DLSS Quality, which lifts frame rates past 140 fps. Co-op adds CPU load that can lower frame rates in busy survival moments, so pair a fast CPU. A Ryzen 7 9800X3D or Core Ultra chip keeps frame times steady for both 4K visuals and co-op sessions.
RTX 5090 In SA
The RTX 5090 is currently stocked at Evetech in the R55,000-R65,000 band depending on model. At 4K it is a sensible pairing for Sons of the Forest, delivering smooth high-refresh survival in the dense forest. Pair it with a Ryzen 7 9800X3D and a 4K 144Hz panel for the full experience.
FAQ
What FPS does the RTX 5090 get in Sons of the Forest at 4K?
Around 90-130 fps maxed native, rising past 140 fps with DLSS Quality. The dense foliage finally stresses the GPU at 4K.
Should I use DLSS at 4K in this game?
Yes, DLSS Quality. It lifts frame rates past 140 fps with minimal image loss, ideal for smooth 4K survival on a high-refresh panel.
What CPU pairs best with the RTX 5090 here?
A Ryzen 7 9800X3D, which keeps frame times steady at 4K and during CPU-heavy co-op survival sessions.
enable DLSS Quality in Sons of the Forest to lift the RTX 5090 past 140 fps, and pair a Ryzen 7 9800X3D for steady co-op frame times.