my new guns GROD3's precision is now showing at "1", and the EF88's precision is "000", no matter which attachment that I'm using, other stats change as attachment changed.
Another problem is when im at the main menu "Play" page , if I switch to other tag like "Load out"then go back to "Play" tag everything will be gone except the screens background, and i have to quit and restart the game.

same weapon stats showing for both guns but consoles not affected

It is a visual bug and has nothing to do with actual weapon's performance.