As i read on manual, the PCI setting into the bios is not something can cause instability:
PCI Subsystem Settings
Press <Enter> to enter the sub-menu.
PCI Latency Timer
This item controls how long each PCI device can hold the bus before another
takes o...
PCI Subsystem Settings
Press <Enter> to enter the sub-menu.
PCI Latency Timer
This item controls how long each PCI device can hold the bus before another
takes o...