Have fixed mirrors on planes that have them

[WTE_Galway]

Originally Posted by SEE

.....apart from mirrors (which eat FPS when enabled)

Yep that is the real reason they can be toggled.

They were introduced at a time when mirrors slowed all but the most expensive gaming rigs to a standstill.

Toggling the mirrors meant normal people (who had not sold their grandmother to buy a high end game rig) could take advantage of mirrors when they needed them without making the game unplayable.

In online terms, fixed mirrors disadvantaged people on slower machines.