Gran Turismo 4 (PAL) SCES-51719 Video Ram problem.

[lokifire90]

I cannot run Gran Turismo 4 over 2x native with AMD Fury 4GB HBM !?!

I max my video ram out and then the emulation slows down, i also have large framebuffer option unticked.

[FlatOut]

Update to the latest git build, the issue should only still happen at 6x and 8x native:
http://buildbot.orphis.net/pcsx2/index.php?m=fulllist