Have you tried running sfc /scannow in cmd to see if it finds any problems. And maybe check in device manager to see if any problems on there, Then of course try Event viewer to see what it shows.
With the latest version of windows it runs Windows defender and Windows Firewall automatically. If you have your own security on board maybe a conflict with them.
Another one that comes up is to disable fast start in power options.
No doubt you have tried most of them. Hope someone can give you the advice needed.