Waffle,
Recently I started noticing pixel pin holes in many places in and on rides. Here are several examples.
Wirbel - gunner position some of the bolt heads and large pivot pin in front of face and to left of face.
B26 - waist gunner position looking back inside of fuselage, bulkheads are a star field of missing pixels.
M16 - gunner position, look on receiver block of both M2 at the the two large bolt heads.
He111 - face of 7mm MG drums and same as B26 back through the fuselage.
Do you want me to check all rides in the game or is there a global setting involved from your end?