ACPI.sys, NDIS.sys, and TCPIP.sys causing massive DPC latency spikes

Question

I am running Win 7 Ultimate. I recently reinstalled my OS. Using LatencyMon and DPCLatency checker, I've noticed that these three drivers are causing massive spikes. How do I replace these files with non-problematic files?
(Originally, my computer was on Home Prem, I did an anytime upgrade to Ultimate, this time I did a clean install)
Thanks.

Answer 1

Dear all,
I am also doing home recording with my computer, via firewire and I also see latency spikes.
Its for an advanced home user difficult to judge, what is causing issues.
Audio clicks and drops were mainly caused on my (high performance system) by non optimal combination of Firewire Card/Chipset, Windows 7 Firewire driver and driver of the audio Interface, but which I could finally solve.
My Solution for my system:
- 1st I had to buy a new firewire card with recommended chipset of audio interface vendor
- Additionally I had to use the Win7 Firewire "legacy" driver
-> Then my audio clicks and drops went away.
Month later the vendor releases a new version of his Mixer/driver for the audio interface (Saffire mix control).
And what shall I tell:
- the normal Win7 firewire driver could be chosen (which seems to be more optimized in terms of latency)
- under Cubase (with setting "optimize cubase for windows") the firewire latency went down from 200us to even 76-90us on average.
Of course Microsoft shall work on optimizing their OS, I want an optimized OS as good base for everything.
But all my problems went away in terms of recording, at least on my system, when I optimized things around Mircrosoft.
With a Laptop this might be a different issue ..
LatencyMon v3.0: CONCLUSION
Your system seems to have difficulty handling real-time audio and other tasks. You may experience drop outs, clicks or pops due to buffer underruns. One or more DPC routines belonging to a driver running in your system appear to be executing for too long. At
least one detected problem appears to be network related. You may have to disable wireless adapters to get better results.
OS version:                                          
Windows 7 Service Pack 1, 6.1, build: 7601
CPU:                                                 
GenuineIntel Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz
Logical processors:                                   8
RAM:                                                 
17170518016 total
VM:                                                  
2147352576, free: 1916923904
Reported CPU speed:                                   2807 MHz
Measured CPU speed:                                   2722 MHz
Highest measured kernel timer latency (µs):           1289.9413
Highest measured SMI routine or CPU stall (µs)        98.8614
Highest DPC routine execution time (µs):              1978.9440
Driver with highest DPC routine execution time:       ndis.sys - NDIS 6.20-Treiber, Microsoft Corporation
Highest reported total DPC routine time (%):          0.9446
Driver with highest DPC total execution time:         Wdf01000.sys - Kernelmodustreiber-Frameworklaufzeit, Microsoft Corporation
Total time spent in DPCs (%)                          1.7380
DPC count (execution time <250 µs):                   3443062
DPC count (execution time 250-500 µs):                0
DPC count (execution time 500-999 µs):                68
DPC count (execution time 1000-1999 µs):              6
DPC count (execution time 2000-3999 µs):              0
DPC count (execution time >=4000 µs):                 0