IR/optical SAMs having trouble locking onto targets on Maginot Line

Possibly a bug report here? Won’t flare it as such, I am not 100% sure it is a bug.

Hello everyone,

I drive around in my Isuzu truck slinging Type 81 C SAMs and in my Toyota slinging Type 91 SAMs. For the most part, there is no issue - IR lock works against most targets on most maps, for Russian helis, optical seeker does wonders too, as long as the targets isn’t hugging the ground.

Now, I don’t know if this is a bug or whatever, but

for some reason, and I have had this happened to me on both the Type 93 and Type 81 C, on the map Maginot Line, the missiles have a very hard time getting a lock, even on a clear day and on targets way above the ground, both on normal version and on winter version. IR lock and optical lock both seem broken on said map.

On other maps, when I can’t get a lock, the reason is fairly apparent to me (clouds, sun, target too low to the ground, etc.), but on Maginot Line, I am struggling to lock, while the enemy aircraft is zooming closer, and closer, and closer, and then I am dead.

Is this just me? Does anyone else feel like Maginot Line somehow breaks IR/optical lock-on? Or is it just something else that screwing me over that I am not aware off?