I have TP Link all over the house, all different kinds, all bought for a song off
ebay (people upgrade, change to different technologies). As others have said, setting them up and getting them to talk to each other properly can be a bit of a faff (generally takes me an hour give or take rather than the claimed plug 'n play+/-), but once they're up and running they work well. I've never noticed them to slow down the main connection, which generally runs at 50 give or take. Right now, using wi-fi from a tp-link adaptor three floors down, my laptop's getting....
View attachment 469670