New GE-800 router, I set up the MLO wi-fi network and works just fine when first connected to it with my Galaxy S24 Ultra. I have a 1 gig down service to the house and it always stays steady as a rock with my Smart Connect network (2.4, 5 & 6 GHz combined, also LAN).  But after connecting to my MLO wi-fi network for a couple hours, speed drops from close to a gig, to only a couple hundred meg.  Disconnect and reconnect to MLO and speed is right back up where it should be, as judged by Ookla Speedtest each time, utilizing the same server.  I live in a low interference residential neighborhood, with non-congested channels.  I've tried leaving the wi-fi channel on Auto and switching to several other channels (1, 6, 11) with same results.  Currently on channel 1, as it is farthest from my Arlo camera system channel.  Router is in a great place for whole house wi-fi reception, so no issues there... just the annoying download speed loss after a while of little or no use.  Which my non-MLO network does not experience at all.  Also all cables throughout are new Cat-6 and firmware is latest version.  MLO seems to be the only issue, which allows greater speed combining wi-fi 7 along with the other 3 bands at close range from router.  I hope most of this made sense... though I have 30 years in computer repair, networking is not my strong point.  Thank you in advance...