I'm sorry for the link posting issues, we took this opportunity to explain the background
here.
Concerning your ReShade issue, generally your system should be fine to run ReShade, my bet is that the issues have something to do with the fact that it's a Steam game installation.
There's a couple more things that need to be checked but this would be step 1:
I'd recommend to copy the whole game folder ("D:\Steam\steamapps\common\IL 2 Sturmovik 1946\" in your case) to a different place, e.g. D:\Games\IL2\Modact, then download and install Modact and then the
Direct2Drive Patch.
Which Modact version you'll have to choose depends on the game version you're running currently.
If it's 4.12.2m, then install
Modact 5.3.
If it's 4.13.1m, then install
Modact 6.1.
If it's 4.13.2m, then
downgrade to 4.13.1 first and then proceed with Modact 6.1 installation.
Next step would be to check your conf.ini since it seems like you're running your game in DirectX mode currently, which is not good for IL-2.
You should choose OpenGL instead and adjust your conf.ini so your game runs in "perfect mode", see
here.
Last but not least ReShade generates it's own logfile.
When you run your game in OpenGL mode, the logfile name is "opengl32.log". The contents of that log would be important in case of a ReShade crash.
Best regards - Mike