Recently (last week or so) the 2.4ghz band on my archer c4000 has become very slow to the point of being unusable. It is extremely sporadic in speeds as well. While it should be up around 150mbs, it bounces between about 5 and 50. The 5ghz channel speed is fine, though I have noticed an increase in random disconnects. Very annoying given the need to work from home right now. 

I have turned off and on again, reset to factory defaults and all other basic troubleshooting. Honestly it seems like the radio itself is dying. Anyone else had this experience or having similar issues?