Hey, my problem is really weird. First of all, downloading and browsing stuff works completly fine. I can also play games without issues. But for some programs the internet needs multiple attempts to work all the time. For example teamspeak. I start the program and open up a server. It ALWAYS takes more than 1 attempts to connect to a server, no matter which server. When im finally in a server after several attempts everything works completly fine.
Dota: I always have to refresh the ping to the server multiple times before the server responds with the ping numbers.
Diablo 2: I need to connect to battle.net multiple times to get into it.
Path of Exile: I can't even play this game because not only do I need to open it up several times to play but I can't enter new maps because the connection fails.
Just some minutes ago I asked my brother if his teamspeak works as "good" as mine does. His worked just fine. It has to be something software/hardware related to my pc. I tried turning off the firewall, running windows in safe mode with network drivers and checked how Path of exile responds to a fresh virtual windows installation with Vmware but nothing helped. It is so weird, I have no idea what causes this problem.
A VPN didn't change anything.
I hope anyone of you has some help.
Make and model of computer: selfmade, I can list parts if needed
How the computer is connected (wireless or wired): wired
Make and model of Router: telekom Speedport W700V
What type of internet you have (Dsl, Cable, T-1,etc..): Dsl