Hey there…
So, having the same performance issue, coming from 4.25 to 4.26.1 …at least in my case it helps to get the old performance back when I deactivate the “landscapes” for raytracing with “r.RayTracing.Geometry.Landscape 0”
But strange thing is; I Create a new Landscape with a resolution of 4033,… nothing inside but a directional light, only default mat applied… when I just look around, performance is always at the maximum (even with r.RayTracing.Geometry.Landscape set to 1) …when I move with the cam in the viewport, the fps drop really hard (see screenshots)
Have Checked different RHI settings with no effect regarding the frame rate drop.
Got the latest nvidia drivers (461.72) running on a RTX2080super,
CPU is AMD 3900x
and 64 GB DDR4-3200 RAM…
and some nice MP600 PCIe 4 ssd’s
Didn’t had these hard issues with 4.25, even with full raytracing on for landscapes (only thing there was, also a framerate drop when moving around but not so extreme like in 4.26, and the landscapes had complex (way tooooo complex) materials applied, I had to deactivate “r.RayTracing.Geometry.Landscape.DetectTextureStreaming” so I could move around with high fps on large landscapes)
Not too dramatic on my end, since I use the UE for visualization so far… but well… makes more fun with high FPS and way faster Movie Captures…
So still investigating…
