If you have not voted chaps, then you need to.
http://www.il2bugtracker.com/issues/174
I would appreciate one of the well written and thorough performance explanations on the bug report please to cover each type we have in the sim. Luthier will need it.
Sod Crump, we have the issue raised to the mods, issue the coups-de-grace via the Bugtracker