How to set priority by changing Qeues on HotSpot for Game-users?

hello
i have simple home network for manage some users by hotspto.
bandwitch about 10Mbit/s for downlaod & 2 Mbit/s for upload.
for example:
i have 2 wireless router connected interface 3 & 4 ( for 2 positions in home )
& my pc connected to interface 2
Modem to interface 1

i setup 3 hotspot servers for these 3 interfaces ( interface 2,3,4 ) & user profiles + users

my issue:
all users have rate for 256K/2M by user-profiles in hotspot & the limitation working for download files or web-browsing.
but gamers with same profile cant play game for high ping & that game is lag ( CSGO game)
Gamers can play by suitable ping when no user using wifi.

i think to make Priority by Qeues on hotspot & gamers using net by Priority value 1 & another users for priority 8

i need to guide for setup qeues on hotspot

dear engineers . please guide me