You already post your issues in that topic but I believe that you miss the point,I suggest you check it again to learn about “parking”.
I’m on Win 7 64 and have the same audio card like you,a smaller processor and have 64 buffer with a lot of plugs,VSTi and a perfect performance after parking,configure my Bios and switch my video drivers.
Before that my performance was awful,hi buffers,noise,clicks and ASIO spikes.
I’m pretty sure that you can improve your system to work flawless.
The trick is to check what works for you.
Cheers