When I get close to this guy I received orange stripe paint bro like he emits something. So which decoration did this?
Or it’s object contamination? because it has the same color as barrel overheating glow fx bro
Try deleting your “cache” and “compiledShaders” folders in the War Thunder installation and do a file verification to re-download them.
Double check your drivers so that they are up to date.
Temporarily remove (just move to a folder outside of the game) any custom content you have installed to see if that solves it.
If the problem persists you can bug report it here: Gaijin.net // Issues (just search a bit first so that you don’t report something that is already reported and known about)
A guide on how to report bugs can be found here: ([Navigation] Technical Knowledge Base | War Thunder Wiki)