Huge problems using xbox elite controller wireless on pc

Got an xbox elite series 2 a few days ago. When i use the controller wired then none of the following issues accure. But when i use it wirelessly alot of weird stuff happens:
Allmost everytime i get into a firefight with another player i get extreme framedrops combined with a short dissconnect of my controller. Sometimes the game even says i have huge packetloss. But just for a few seconds and ONLY if i use the controller wireless. I was not able to fix this.