Guys, if sharing IRQ is doing you problem try putting the card in MSI mode, it means it will be as part of a memory and not a part of virtual IRQ which is not real priority.
It was posted on guru3d forum.
Do you want more information ? search a file named MSI_util.exe , it let you mark the devices you want to change to MSI mode and uncheck for windows Virtual IRQ.
If you go to Device Manager > View by Type > Scroll down until you see (PCI) - - - Take notice on the (number) ( - number )
any number that is higher than IRQ 15 means it is virtual.
any number with a - mark means it is in MSI mode and does not share IRQ
any device in MSI mode would have low ISR or not at all. ( Latency Mon )
any device in MSI mode should perform better and have less impact of cpu usage
My Creative ZXR works in MSI mode, Realtek sound cards I don't think that work.
Usually if you have NVIDIA card will not be in MSI mode, should highly prefer you put it on MSI mode and every drive update you will need to check and apply again.
MSI_Util usage
Make sure to have Registry Backup , System Restore for easy management.
If some device doesn't like MSI mode and you get BSOD, you should load Last Known Configuration and don't select this item again, just move on to others.