Hey folks, thanks for your help, but I give up.
As result of the conversation, I will switch off the Windows defender and realtime protection when being offline.
Then, I can minimize the latency problems.
But it causes latencies when switching realtime scanning and private network firewall off. Or could it be an accident? (Switching Windows firewall and realtime scanning completely off, there is no latency.) I tried the one factor changing system to find the cause for latencies.
I switched off the public-network-firewall (cause it makes also latency-problems). I tried to make exclusions (see exclusion at the attachment), but there are still problems. :-(
Once again a latency report of drivers and processes... Thanks for your patience.
P. S.: When switching off the...
A short addition. I just tested the amounts of latency concerning the Windows protection.
Biggest amount:
Firewall/Network: Public Network
Virus-protection: Real time protection
A lesser amount:
Firewall/Network: Private Network
How can I do this? (How to disable Real time scanning...). I am glad that there is a possibility to get rid off latency problems offline in concert situations. But I agree it is not the best to switch the defender off.
Yes, you are right. I disabled Microsoft Defender at Firewall / Network security - and there are no peaks anymore. This is fine, thank you. :-)
Is there a possibility to disable the Microsoft Defender with "one click" when going offline (and enable it when using the internet)? Perhaps, there are...
Now, after some time, the search indexer is no problem any more. But there are still latency reports. There is a process by msmpeng.exe (see screenshot). Is there a possibility to reduce this?
I also attach screenshots of the processes, one listed after hardpagefaults, one listed after PID. The PID screenshot shows the bottom because PID over 10000 (and there is one at 12000) are listed at the bottom, not at the top of the list (with PID about 9000).
I can not find the Realtek device in the device manager :-( . I deleted the Dell assistant. But I can not find DellTechHub.exe in Autoruns. There is only a Dell Client Management Service or DellRctlService similar to this. I do not know if you think of these services to uncheck.
As attachment...
I do not need a Realtek Audio driver cause I use a Focusrite Interface with Asio-drivers. Could you tell me how to deinstall Realtek drivers properly (I thought, I had done it). Thanks for the advice with the Dell assistant. I will try this.