Hi please help, i am staying in a double storey house and in my room on the second floor i am getting good 90mbps speed. But my parent downstairs are getting 9-20mbps, which kind of disappoint my father bcs he is paying the rm136 every month and he is getting slow speeds. Is there any proven gadget that will work to make the ground floor speed better???

hi can recommend which brand and model to get that 100% works? Bcs a computer shop did sell my father a rm200 wifi booster or something like that but didnt work at all...

my router is the black color tp link by tm, need to upgrade also?
router on the second floor, all using wireless.
you using the rm700 one i see on lazada?
hard to say a budget, bcs i just want something that works but not something crazy expensive. Like i mention a computer shop cheated my father rm200 by selling him a gadget that doesnt work.