WN3000RPv3 Much slower connection than usual

I use the WN3000RPv3 both as a wifi booster, as well as running an ethernet cable directly from my range extender to my Xbox. Running a speed test on both the wireless and wired devices shows I'm have much slower speeds than normal( usually receive 30-60 Mbps when connected to the range extender and currently getting about 2 Mbps). I've checked the connection coming to the main network and that connection is perfectly fine (actually getting slightly higher speeds than what I pay for). I've also checked to see if the range extender had a firmware update but that was already up to date. Other than those, I'm not sure how else to fix the problem