Good news, Ive resolved my issues with a brand new unit.
Thank you to all that have assisted in this matter.
👍👍
okay but how?
@tsever Obviously by buying a new router.
Haha, nice idea, obviously I already bought a new orbi rbr750 and the setup is okay. But only Windows 10 devices are having really bad upload speed like 0.30 Mbit while testing at speetest.net