Game mode: Checked on Single-player most likely it affects all game modes.
Type of issue: Performance
Server type: All (probably)
Region: All (probably)
Mods?: No
Edition: Steam
Bug Description:
Focusing the camera on the area of the new The Isle of Dawn biome of Isle of Siptah significantly reduces game performance. Increases GPU consumption up to 100% and reduces the number of drawn FPS.
Reason: The light-colored grass, which is rendered and animated even when viewed from a far distance causes this problem.
Only one type of grass creates low performance issue.
Expected Behavior:
This light-colored grass should behave like other objects (grass) of this type. It should not be rendered and animated at the best quality in the most distant terrain seen.
Steps to Reproduce:
Note: Graphics card used for the test: NVIDIA GeForce GTX 1050 Ti (4+8) 12 GB
- Change the graphic settings to the lowest.
- The V-sync setting is not important.
- Enabled setting for low performance laptops reduces GPU consumption slightly.
-
Off: GPU consumption looking at old land
45%, at new land 
100%. -
On: GPU consumption looking at old land 25%, at new land 75%.
-
Off: GPU consumption looking at old land
- Resolution 1920x1080 (borderless).
-
Note: Most likely I also had the FPS cap turned on at the 30 value.
- Create a new game (without buildings and other players).
- Stand facing the new land of Siptah.
- You must stand so that you can see as much space as possible in front of you or high enough so that nothing blocks the view.
- At low settings, you need to be closer new lands just to notice that increase GPU usage drastically.
- At higher settings, you can be further new lands just to notice that increase GPU usage drastically.
- Check GPU usage level.
-
It should be much higher than usual.
-
- Turn the camera over to the old lands.
-
GPU usage level should be usual (lower).
-
Details
The photo was taken with the smallest possible graphics settings (and enabled setting for low performance laptops). I look from a high cliff at the end of the island, I look at the other end.
- The light-colored grass is visible to the farthest land!
- The grass (1) is close, animated.
- The grass (2,3,4) is far, definitely animated.
- You can see the grass (5,6,7) animation at all distances.
As you fly above the ground, you will notice that when grass begins to appear (at far distance, over 2 quadrants of map), GPU consumption increases. I also checked it on the lowest graphics settings.
Addition: When we stand in the middle of The Isle of Dawn (some grass is in front of us and the rest is behind us / unseen) the GPU consumption is not that high - this also confirms the grass as the reason for the low performance.
Note: Since new areas of Siptah emerged, I have seen many posts and a few topics related to this case (low performance, LOD issue). I will try to paste at least some of the newest in the next posts.
Edit: I deleted the duplicate sentence. All edited / added sentences are marked with a pen icon at the end.
Edit: I added another detail.
I noticed that the ground in the distance has a few bright spots.
The screenshot is definitely taken with this mode turned on.
