I managed to capture the crash with Process Monitor.
Screen capture shows that during loading 2nd mission there is attempt to write to dcs.log file and right after that edCore.dll crashes with following stack:
0 FLTMGR.SYS FltDecodeParameters + 0x1e3b 0xfffff806591a608b C:\WINDOWS\System32\drivers\FLTMGR.SYS
1 FLTMGR.SYS FltDecodeParameters + 0x18e7 0xfffff806591a5b37 C:\WINDOWS\System32\drivers\FLTMGR.SYS
2 FLTMGR.SYS FltDecodeParameters + 0x8f6 0xfffff806591a4b46 C:\WINDOWS\System32\drivers\FLTMGR.SYS
3 FLTMGR.SYS FltDecodeParameters + 0x66b 0xfffff806591a48bb C:\WINDOWS\System32\drivers\FLTMGR.SYS
4 ntoskrnl.exe IofCallDriver + 0x55 0xfffff8065c5185b5 C:\WINDOWS\system32\ntoskrnl.exe
5 ntoskrnl.exe PsSetCurrentThreadPrefetching + 0xcdc 0xfffff8065c8055ac C:\WINDOWS\system32\ntoskrnl.exe
6 ntoskrnl.exe IoQueryFileDosDeviceName + 0x48d 0xfffff8065c8ce04d C:\WINDOWS\system32\ntoskrnl.exe
7 ntoskrnl.exe ObQueryNameString + 0x46 0xfffff8065c8cc646 C:\WINDOWS\system32\ntoskrnl.exe
8 ntoskrnl.exe ObQueryNameString + 0x5f3 0xfffff8065c8ccbf3 C:\WINDOWS\system32\ntoskrnl.exe
9 ntoskrnl.exe NtMapViewOfSection + 0x1944 0xfffff8065c7fffb4 C:\WINDOWS\system32\ntoskrnl.exe
10 ntoskrnl.exe NtMapViewOfSection + 0xd45 0xfffff8065c7ff3b5 C:\WINDOWS\system32\ntoskrnl.exe
11 ntoskrnl.exe setjmpex + 0x7c78 0xfffff8065c6086b8 C:\WINDOWS\system32\ntoskrnl.exe
12 ntdll.dll NtQueryVirtualMemory + 0x14 0x7fff0218d284 C:\WINDOWS\SYSTEM32\ntdll.dll
13 KERNELBASE.dll SetUnhandledExceptionFilter + 0x27d 0x7ffeffeba8ad C:\WINDOWS\System32\KERNELBASE.dll
14 KERNELBASE.dll UnhandledExceptionFilter + 0x166 0x7ffefff5b806 C:\WINDOWS\System32\KERNELBASE.dll
15 ntdll.dll memset + 0x13b0 0x7fff02195270 C:\WINDOWS\SYSTEM32\ntdll.dll
16 ntdll.dll _C_specific_handler + 0x96 0x7fff0217c776 C:\WINDOWS\SYSTEM32\ntdll.dll
17 ntdll.dll _chkstk + 0x11f 0x7fff0219217f C:\WINDOWS\SYSTEM32\ntdll.dll
18 ntdll.dll RtlRaiseException + 0x434 0x7fff02141454 C:\WINDOWS\SYSTEM32\ntdll.dll
19 ntdll.dll KiUserExceptionDispatcher + 0x2e 0x7fff02190cae C:\WINDOWS\SYSTEM32\ntdll.dll
20 d3d11.dll d3d11.dll + 0x16bae 0x7ffefb606bae C:\WINDOWS\SYSTEM32\d3d11.dll
21 d3d11.dll d3d11.dll + 0x169f9 0x7ffefb6069f9 C:\WINDOWS\SYSTEM32\d3d11.dll
22 d3d11.dll D3D11CoreCreateDevice + 0x9823 0x7ffefb619ee3 C:\WINDOWS\SYSTEM32\d3d11.dll
23 d3d11.dll D3D11CoreCreateDevice + 0x8565 0x7ffefb618c25 C:\WINDOWS\SYSTEM32\d3d11.dll
24 d3d11.dll D3D11CoreCreateDevice + 0x8ee6 0x7ffefb6195a6 C:\WINDOWS\SYSTEM32\d3d11.dll
25 d3d11.dll D3D11CoreCreateDevice + 0x2af9b 0x7ffefb63b65b C:\WINDOWS\SYSTEM32\d3d11.dll
26 d3d11.dll D3D11CoreCreateDevice + 0x22e65 0x7ffefb633525 C:\WINDOWS\SYSTEM32\d3d11.dll
27 dx11backend.dll createRenderer + 0x2afa6 0x7ffe8a202d16 D:\SteamLibrary\steamapps\common\DCSWorld\bin\dx11backend.dll
28 dx11backend.dll createRenderer + 0x2b112 0x7ffe8a202e82 D:\SteamLibrary\steamapps\common\DCSWorld\bin\dx11backend.dll
29 NGModel.dll model::ModelMaterial::draw + 0x2595 0x7ffe8a15ddc5 D:\SteamLibrary\steamapps\common\DCSWorld\bin\NGModel.dll
30 NGModel.dll model::ModelMaterial::draw + 0x5db0 0x7ffe8a1615e0 D:\SteamLibrary\steamapps\common\DCSWorld\bin\NGModel.dll
31 NGModel.dll model::ModelMaterial::draw + 0x9784 0x7ffe8a164fb4 D:\SteamLibrary\steamapps\common\DCSWorld\bin\NGModel.dll
32 NGModel.dll model::graph::GraphNodesFactory::bootstrap + 0x473 0x7ffe8a150ed3 D:\SteamLibrary\steamapps\common\DCSWorld\bin\NGModel.dll
33 NGModel.dll model::ModelMaterial::draw + 0xc592 0x7ffe8a167dc2 D:\SteamLibrary\steamapps\common\DCSWorld\bin\NGModel.dll
34 NGModel.dll init_graphics_plugin + 0x2f6d 0x7ffe8a171f3d D:\SteamLibrary\steamapps\common\DCSWorld\bin\NGModel.dll
35 NGModel.dll model::NGModelLods::~NGModelLods + 0x48 0x7ffe8a172088 D:\SteamLibrary\steamapps\common\DCSWorld\bin\NGModel.dll
36 NGModel.dll model::NGModelLods::~NGModelLods + 0x8de 0x7ffe8a17291e D:\SteamLibrary\steamapps\common\DCSWorld\bin\NGModel.dll
37 GraphicsVista.dll Graphics::Models::gc + 0x1b3 0x7ffede0c6b73 D:\SteamLibrary\steamapps\common\DCSWorld\bin\GraphicsVista.dll
38 GraphicsVista.dll Graphics::Renderer::FreeUnusedResources + 0x20 0x7ffede0c2970 D:\SteamLibrary\steamapps\common\DCSWorld\bin\GraphicsVista.dll
39 DCS.exe SW + 0x5114a4 0x7ff697621e54 D:\SteamLibrary\steamapps\common\DCSWorld\bin\DCS.exe
40 DCS.exe SW + 0x4f8999 0x7ff697609349 D:\SteamLibrary\steamapps\common\DCSWorld\bin\DCS.exe
41 edCore.dll Common::FSM::sendOutputSymbol_ + 0x4a 0x7ffe8920786a D:\SteamLibrary\steamapps\common\DCSWorld\bin\edCore.dll
42 edCore.dll Common::FSM::enterToState_ + 0xc2 0x7ffe89206f02 D:\SteamLibrary\steamapps\common\DCSWorld\bin\edCore.dll
43 edCore.dll Common::FSM::onSymbol_ + 0x1a9 0x7ffe892076e9 D:\SteamLibrary\steamapps\common\DCSWorld\bin\edCore.dll
44 DCS.exe SW + 0x50eae1 0x7ff69761f491 D:\SteamLibrary\steamapps\common\DCSWorld\bin\DCS.exe
45 DCS.exe SW + 0x4df884 0x7ff6975f0234 D:\SteamLibrary\steamapps\common\DCSWorld\bin\DCS.exe
46 DCS.exe SW + 0x4dfc5d 0x7ff6975f060d D:\SteamLibrary\steamapps\common\DCSWorld\bin\DCS.exe
47 DCS.exe AmdPowerXpressRequestHighPerformance + 0xe56600 0x7ff698a65604 D:\SteamLibrary\steamapps\common\DCSWorld\bin\DCS.exe
48 DCS.exe SW + 0x71680e 0x7ff6978271be D:\SteamLibrary\steamapps\common\DCSWorld\bin\DCS.exe
49 KERNEL32.DLL BaseThreadInitThunk + 0x14 0x7fff02007034 C:\WINDOWS\System32\KERNEL32.DLL
50 ntdll.dll RtlUserThreadStart + 0x21 0x7fff02142651 C:\WINDOWS\SYSTEM32\ntdll.dll
Starting from line 20 it is exactly the same as the error in dcs.log
2021-05-15 11:05:36.476 INFO EDCORE: try to write dump information
2021-05-15 11:05:36.478 INFO EDCORE: # -------------- 20210515-110537 --------------
2021-05-15 11:05:36.480 INFO EDCORE: DCS/2.7.0.5659 (x86_64; Windows NT 10.0.19042)
2021-05-15 11:05:36.481 INFO EDCORE: C:\WINDOWS\SYSTEM32\d3d11.dll
2021-05-15 11:05:36.483 INFO EDCORE: # C0000005 ACCESS_VIOLATION at FB606BAE 00:00000000
2021-05-15 11:05:36.493 INFO EDCORE: SymInit: Symbol-SearchPath: '.;D:\SteamLibrary\steamapps\common\DCSWorld;D:\SteamLibrary\steamapps\common\DCSWorld\bin;C:\WINDOWS;C:\WINDOWS\system32;SRV*C:\websymbols*https://msdl.microsoft.com/download/symbols;', symOptions: 528, UserName: 'Matti'
2021-05-15 11:05:36.494 INFO EDCORE: OS-Version: 10.0.19042 () 0x100-0x1
2021-05-15 11:05:37.884 INFO EDCORE: 0x0000000000016BAE (d3d11): (function-name not available) + 0x0
2021-05-15 11:05:37.884 INFO EDCORE: 0x00000000000169F9 (d3d11): (function-name not available) + 0x0
2021-05-15 11:05:37.884 INFO EDCORE: 0x0000000000029EE3 (d3d11): D3D11CoreCreateDevice + 0x9823
2021-05-15 11:05:37.884 INFO EDCORE: 0x0000000000028C25 (d3d11): D3D11CoreCreateDevice + 0x8565
2021-05-15 11:05:37.885 INFO EDCORE: 0x00000000000295A6 (d3d11): D3D11CoreCreateDevice + 0x8EE6
2021-05-15 11:05:37.885 INFO EDCORE: 0x000000000004B65B (d3d11): D3D11CoreCreateDevice + 0x2AF9B
2021-05-15 11:05:37.885 INFO EDCORE: 0x0000000000043525 (d3d11): D3D11CoreCreateDevice + 0x22E65
2021-05-15 11:05:37.885 INFO EDCORE: 0x0000000000042D16 (dx11backend): createRenderer + 0x2AFA6
2021-05-15 11:05:37.885 INFO EDCORE: 0x0000000000042E82 (dx11backend): createRenderer + 0x2B112
2021-05-15 11:05:37.886 INFO EDCORE: 0x000000000002DDC5 (NGModel): model::ModelMaterial::draw + 0x2595
2021-05-15 11:05:37.886 INFO EDCORE: 0x00000000000315E0 (NGModel): model::ModelMaterial::draw + 0x5DB0
2021-05-15 11:05:37.886 INFO EDCORE: 0x0000000000034FB4 (NGModel): model::ModelMaterial::draw + 0x9784
2021-05-15 11:05:37.886 INFO EDCORE: 0x0000000000020ED3 (NGModel): model::graph::GraphNodesFactory::bootstrap + 0x473
2021-05-15 11:05:37.886 INFO EDCORE: 0x0000000000037DC2 (NGModel): model::ModelMaterial::draw + 0xC592
2021-05-15 11:05:37.887 INFO EDCORE: 0x0000000000041F3D (NGModel): init_graphics_plugin + 0x2F6D
2021-05-15 11:05:37.887 INFO EDCORE: 0x0000000000042088 (NGModel): model::NGModelLods::~NGModelLods + 0x48
2021-05-15 11:05:37.887 INFO EDCORE: 0x000000000004291E (NGModel): model::NGModelLods::~NGModelLods + 0x8DE
2021-05-15 11:05:37.887 INFO EDCORE: 0x0000000000036B73 (GraphicsVista): Graphics::Models::gc + 0x1B3
2021-05-15 11:05:37.887 INFO EDCORE: 0x0000000000032970 (GraphicsVista): Graphics::Renderer::FreeUnusedResources + 0x20
2021-05-15 11:05:37.888 INFO EDCORE: 0x0000000000801E54 (DCS): SW + 0x5114A4
2021-05-15 11:05:37.888 INFO EDCORE: 0x00000000007E9349 (DCS): SW + 0x4F8999
2021-05-15 11:05:37.888 INFO EDCORE: 0x000000000011786A (edCore): Common::FSM::sendOutputSymbol_ + 0x4A
2021-05-15 11:05:37.888 INFO EDCORE: 0x0000000000116F02 (edCore): Common::FSM::enterToState_ + 0xC2
2021-05-15 11:05:37.888 INFO EDCORE: 0x00000000001176E9 (edCore): Common::FSM::onSymbol_ + 0x1A9
2021-05-15 11:05:37.888 INFO EDCORE: 0x00000000007FF491 (DCS): SW + 0x50EAE1
2021-05-15 11:05:37.889 INFO EDCORE: 0x00000000007D0234 (DCS): SW + 0x4DF884
2021-05-15 11:05:37.889 INFO EDCORE: 0x00000000007D060D (DCS): SW + 0x4DFC5D
2021-05-15 11:05:37.889 INFO EDCORE: 0x0000000001C45604 (DCS): AmdPowerXpressRequestHighPerformance + 0xE56600
2021-05-15 11:05:37.889 INFO EDCORE: 0x0000000000A071BE (DCS): SW + 0x71680E
2021-05-15 11:05:37.889 INFO EDCORE: 0x0000000000017034 (KERNEL32): BaseThreadInitThunk + 0x14
2021-05-15 11:05:37.889 INFO EDCORE: 0x0000000000052651 (ntdll): RtlUserThreadStart + 0x21
2021-05-15 11:05:38.956 INFO EDCORE: Minidump created.
I hope this helps.