While creating a large file on BtrFS volume, system gets unresponsive

SW:

• ReactOS Version: 0.4.14-dev-1279
• Create Dummy Files

HW:

• Intel L7400 CPU, 1GiB RAM, 160GiB WDC SATA drive

Steps to reproduce:

• Install ReactOS on 40GiB partition formatted with BtrFS.
• Using live Linux, create a 4GiB partition und format it with BtrFS.
• Using Create Dummy Files, create a 512MiB file on the 4GiB volume.
• Wait for the system to get unresponsive.

If the same test is done on a 4GiB FAT32 volume, all is fine.