Orbi Wired Speeds Unacceptably Slow - Wifi Not Impacted - QoS Issues?

Sadly, I'm having similar experiences as many on this forum. My ESPN app buffers whether wired or wireless. The Router is next to the device and I've set it 75%, tried wired, moved the satellite further away, disabled many features some have suggested and it's a constant battle. For the price tag and claim to be user friendly and easy to use; I've been disappointed. I've tried to stay positive about my experience with Orbi but I'm starting to waver considering I've owned significantly cheaper devices and not had this many issues. As stated, when it works, there's nothing better but it's so unreliable at this point.
Unfortunately, I can't return it anymore so I'm stuck with trying to manipulate it to make it work for my house. The buffering during games is so frustrating considering the cost and what it's suppose to offer.
I'm always up for suggestions!!