How I got rid of shimmering in GB

[Hauggy]

Keep in mind I have a 5060Ti and a 1920x1080 (Flat Screen)

STEP 1: IN-GAME GRAPHICS SETTINGS

Landscape Filter: Set to "Normal" (Avoid "Sharpen" as it causes ground crawl).
Antialiasing: Set to "4x" (Matches the configuration file below).
HDR: Set to "OFF" (High contrast heavily increases edge shimmering).

[STEP 2: NVIDIA CONTROL PANEL SETTINGS]

Open NVIDIA Control Panel -> Manage 3D Settings -> Program Settings.
Add "IL-2 Sturmovik" (IL-2.exe) and change the following lines:
Antialiasing - Mode: "Enhance the application setting" (This allows NVIDIA's transparency supersampling to work alongside the game's native MSAA).
Antialiasing - Transparency: "4x (Supersample)" or "8x (Supersample)".
Anisotropic Filtering: "16x".
Texture Filtering - Quality: "High Quality".

[STEP 3: NVIDIA DSR (CRUCIAL FOR 1080p SCREENS)]
Running the game at a higher internal resolution is the single most effective weapon against aliasing.

In NVIDIA Control Panel (Global Settings), find "DSR - Factors".
Check "2.25x DL" (Deep Learning Dynamic Super Resolution - DLDSR). This scales a 1920x1080 display cleanly up to 2880 x 1620 using AI downscaling.
Apply the changes.

[STEP 4: STARTUP.CFG EDIT]
Because the in-game menus can sometimes bug out or fail to apply anti-aliasing properly, you must force it via the configuration file.

File Path: Steam\steamapps\common\IL-2 Sturmovik Great Battles\data\startup.cfg
Open the file with Notepad, find the [graphics] section, and change it as explained :

---

ini

[graphics]
	3dhud = 0
	adapter = 0
	bloom_enable = 0
	canopy_ref = 0
	desktop_center = 1
	detail_rt_res = 2048
	draw_distance = 1.00000
	far_blocks = 1
	fps_counter = 0
	fps_limit = 240
	full_height = 1620
	full_width = 2880
	fullscreen = 1
	gamma = 1.00000
	grass_distance = 200.00000
	hdr_enable = 0
	land_anisotropy = 4         // CHANGE FROM 2 TO 4: Forces 16x Anisotropic Filtering
	land_detail = 1
	land_tex_lods = 3
	max_cache_res = 1
	max_clouds_quality = 3
	mgpu_compatible = 0
	mirrors = 3
	msaa = 3                    // CHANGE FROM 1 TO 3: Sets in-game MSAA to 4x
	multisampling = 2           // CHANGE FROM 0 TO 2: Fully activates the Multi-Sampling engine
	or_ca = 0.00000
	or_enable = 0
	post_sharpen = 0            // CHANGE FROM 1 TO 0: Disables sharpening to stop pixel crawl
	preset = 3                  // CHANGE FROM 2 TO 3: Sets baseline profile to Custom/Ultra
	prop_blur_max_rpm_for_vr = 155
	rescale_target = 1.00000
	shadows_quality = 4
	ssao_enable = 0             // CHANGE FROM 1 TO 0: Disables SSAO (optional, fixes shimmering around tree bases)
	vsync = 0
	win_height = 1080
	win_width = 1920
[END]