@nic-
I am unsure if just stating that that memory leak that existed in all 8.1 drivers (including 3345) still exists is enough or not. Here are links to how I described that the issue can be recreated:
Re: Windows* 7/8/8.1 Driver (32 & 64 bit) Version 3345
and
Re: Windows* 7/8/8.1 Driver (32 & 64 bit) Version 3345
Under windows 8.1 only, the intel drivers cause all of virtual memory to be filled if the full screen program is running at a different resolution/refresh rate than the desktop.