[USER=53121]@piorun321[/USER]
I doubt I'm going to be able to help you too much, however, I'm having similar issues - I can't say anything good about Win10/11, so I'll choose to say nothing at all - one thing I notice is that it seems like your network driver is the cause for your high latency spikes.
Some of the people who have similar problems to us have had luck downloading the latest version of their specific lan/wifi drivers, or obscure one-offs, uninstalling their drivers, and installing the specific drivers while praying Windows Update, which you can no longer turn off without slapdash methods, doesn't auto-update and mess up your solution. I don't know what drivers you use for Wifi/Lan, but maybe take a look at the manufacturers site and try that?
