my hotspot unable to connect to additional devices

i am new to the networking and mikrotik world, so i apologize if i do not explain my situation correctly.

i have a RouterBoard 951G-2HnD and am trying to create a wifi hotspot where everyone logs in using the same username and password.
i am using simple queues to limit bandwidth (not sure if i am doing this correctly).
i am doing my testing with 1 laptop and 3 wi-fi enabled mobile phones.
i find that after any two devices have been successfully connected, the other devices are unable to connect or are extremely extremely slow where usually the browser fails to completely load the login page.

i would appreciate it if someone can tell me what areas to focus on or link another thread which a similar problem has been addressed.

thank you.

Have you set the shared-users to more than one? One user per username is the default. This will allow 250 users on one username.

/ip hotspot user profile
set 0 shared-users=250

SurferTim -
yes, i have increased the number of users. 250 users is too much for my implementation, so i have it set to 50 users. all the four devices i use for testing are able to connect to the hotspot.
from what i can tell using speedtests is that approximately 75% of the bandwidth is allocated to the first connection regardless if it is actively using it or not. the remaining 25% is given to the second connection, and nothing is left for the other devices even though they can connect and receive an ip address from the router.
if the first two devices are disconnected, the other two are instantly able to see the login page and can begin surfing.

I haven’t used simple queues and the hotspot with multiple users sharing a user account. Sounds like you need to work on the queue, but I don’t know enough about it to help you.