Well, I ended up doing so, removed all the plugins except the bog standard LSPDFR, and well, it even still crashes upon receiving a call. Pmsl !
I had a look in Windows Event Viewer; and it produces a .NET Runtime error:
Application: GTA5.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: SlimDX.DirectSound.DirectSoundException
at SlimDX.Result.Throw[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](System.Object, System.Object)
at SlimDX.Result.Record[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](Int32, Boolean, System.Object, System.Object)
at SlimDX.DirectSound.SoundBuffer.Play(Int32, SlimDX.DirectSound.PlayFlags)
at sa`gS{="Eh}6F;rA4i>o"%Ib#+/^6T\]\,\+eEj\[ucI{"}1E\[k^#_$.eEeXn!T{}-`(Q^:P0q9|7*O_"(Q^:P0q9|7*O_"()
at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
at System.Threading.ThreadHelper.ThreadStart()