My Archer T9E has been working flawlessly since 2017. Giving a transmit rate of 1300 MHz on 5GHz band. It even allowed me to cast full size 4K HDR movies on my Chromecast Ultra. But as of late the adapter has started giving some problems. The transmit rate is between 1 - 130 MHz which generally settles at 13MHz. Only at the time of startup does it go above 130 MHz sometimes even reaches the full 1300 for a few seconds. After this problem started I've not only tried everything with network troubleshooter and router settings, which by the way is working fine sine there are no issues with my phone or laptop, I've also reinstalled my driver and utility. Since then I've even clean installed my windows due to some separate issues (After which it worked fine for few minutes). I've also made sure that my card is seated properly and that there are no obstacles. Does anyone have any idea how to fix this as I'm getting really desperate? Thanks in advance.