Large designs unable to calculate volume

[QuakeIV]

Here is the state after it appears to deadlock for reference:

Code:

(gdb) info threads
  Id   Target Id                                           Frame
* 1    Thread 0x7f5ba56b9800 (LWP 49616) "AuSceneClient"   futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f5b6c90b070) at ../sysdeps/nptl/futex-internal.h:183
  2    Thread 0x7f5ba49b2700 (LWP 49617) "QXcbEventQueue"  0x00007f5ba8a87aff in __GI___poll (fds=0x7f5ba49b1ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
  3    Thread 0x7f5b9ffff700 (LWP 49618) "DtTrash"         futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f5b6c910010) at ../sysdeps/nptl/futex-internal.h:183
  4    Thread 0x7f5b9f77d700 (LWP 49621) "threaded-ml"     0x00007f5ba8a87aff in __GI___poll (fds=0x7f5b90009c50, nfds=3, timeout=506) at ../sysdeps/unix/sysv/linux/poll.c:29
  5    Thread 0x7f5b9ef7c700 (LWP 49622) "AuSceneClient"   futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55e9c892c7f8) at ../sysdeps/nptl/futex-internal.h:183
  6    Thread 0x7f5b9e554700 (LWP 49623) "AuSceneClient"   futex_abstimed_wait_cancelable (private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x55e9c88d4110) at ../sysdeps/nptl/futex-internal.h:320
  7    Thread 0x7f5b9de0e700 (LWP 49624) "QDBusConnection" 0x00007f5ba8a87aff in __GI___poll (fds=0x7f5b7c0025e0, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
  8    Thread 0x7f5b760f2700 (LWP 49629) "DtTick"          futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f5b6c90b070) at ../sysdeps/nptl/futex-internal.h:183
  9    Thread 0x7f5b758f1700 (LWP 49630) "DtTock"          futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f5b6c90b070) at ../sysdeps/nptl/futex-internal.h:183
  10   Thread 0x7f5b74a20700 (LWP 49634) "AuModel"         0x00007f5ba8a523bf in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x7f5b74a1fbd0, rem=0x7f5b74a1fbd0)
    at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
  11   Thread 0x7f5b67fff700 (LWP 49635) "DtTarget"        0x00007f5ba8a523bf in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x7f5b67ffed80, rem=0x7f5b67ffed80)
    at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78

Additionally, attached the ship I am fiddling with.