May i ask for suggestion staying at a 5000 sq feet place… currently using TPLINK AC1750… half of the place couldnt get any wifi.

Would like to ask does wifi extender affect the speed? Would prefer to have full speed as i would like to stream HD videos. Thank you. Also there will be at least 8 users as well.

or should just get a power router. Btw, each room upstairs got ethernet port as well.

Need suggestion for it. Usually just use wifi and now need to google all this as just shifted place.