To compliment what
@Undone posted, I believe any shadows you render are usually expensive. One thing I might also suggest is to see what it looks like to lower/disable any other non-critical aspects to get your quality up. I run the following and I feel like it's the right balance of quality and performance (differences in
bold):
Resolution:
3840 x 2160 (4K) @ 120Hz (taxing, never shoulda done it, 1080p just isn't an option now)
Anti-Aliasing: SMAA (taxing, but it looks good. FXAA is far too blurry)
Vegetation Density:
Low (render fewer objects...and shadows, if it doesn't ruin immersion).
Quality:
Balanced
Cloud Quality:
Low (...in the grand scheme, I'm hardly looking)
Frame Rate Limiter: V-Sync (capping at 30 is playable, but I'll pay the resource tax and GPU fan speed/sound for the higher FPS)
View Distance: 100%
Shadow Distance:
50%
Grass Distance:
50%
Exposure Adjustment: -0.50
Resolution Scale: 100%
Full Screen: <CHECKED>
Grass Shadows:
<UNCHECKED>
Contact Shadows:
<UNCHECKED>
Reflections:
<UNCHECKED>
Disclaimer: At those settings my RTX3080 (desktop) hovers in the 90% utilization range, but the FPS is in a playable state. I need to poll more statistics around the impact of these setting in locations where they apply to determine the impact on FPS. The settings above are what I found to be "playable", with no hard data to back it up, so take them with a grain of salt.