Some CSLA vehicles are fitted with flexible antennas which bend and flex under acceleration and deceleration. On the surface, this is fine; I love a good wiggly bit. However, many of these flexible antennas seem to bend to an excessive degree under even relatively calm conditions, snapping into 45-degree forward bends at the slightest tap of the brakes.
It is possible to have a flexible antenna within Arma 3 that behaves in a believable manner - the CSLA SKOT has a perfectly good antenna, and GM vehicles such as the SpPz Luchs and BRDM-2 have very serviceable antenna physics. So it would seem to just be a case of refining the limits and sensitivity of the CSLA antennas.