OS6 now works on x86 Legacy WARNING: NO NTGR SUPPORT!

I'm running 6.1.3

root@MueR-NAS:~# cat /proc/meminfo
MemTotal:        1009592 kB
MemFree:           23052 kB
Buffers:            1484 kB
Cached:           494400 kB
SwapCached:            0 kB
Active:           298428 kB
Inactive:         408992 kB
Active(anon):     108100 kB
Inactive(anon):   110208 kB
Active(file):     190328 kB
Inactive(file):   298784 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:       2094844 kB
SwapFree:        2094844 kB
Dirty:            214456 kB
Writeback:             0 kB
AnonPages:        211676 kB
Mapped:            24780 kB
Shmem:              6632 kB
Slab:              55696 kB
SReclaimable:      32516 kB
SUnreclaim:        23180 kB
KernelStack:        1672 kB
PageTables:         8848 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:     2599640 kB
Committed_AS:     809008 kB
VmallocTotal:   34359738367 kB
VmallocUsed:        2776 kB
VmallocChunk:   34359727660 kB
DirectMap4k:        6720 kB
DirectMap2M:     1032192 kB

I just rebooted (had to, completely unresponsive). It restarts my unrar job and loads spike up again. Something about btrfs's transaction logging and unrar is causing very, very, very nasty IO lockups which will just result in the system grinding to a halt, because the FS can't handle normal work. Maybe I'm completely wrong here, but every time an unrar starts, it's trouble.