When Wifi is on my bluetooth stutters, how do i fix this?

[LP_581]

When Wifi is on my bluetooth stutters. It only happens with my laptop (a hp probook 455 bought at the beginning of this year), while bluetooth on my phone works fine with the wifi. it's not the headphones as it happens with a different pair and my soudbox aswell.the problem appeard about 2 weeks ago and i completely reset my notebook but that didn't fix it. sometimes it works with the wifi and sometimes the interference is less than other times. bluetooth troubleshooter didn't find anything. wifi is 5gigHz.Edit: the problem never appears when wifi is off. i don't have the option of ethernet.

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