The 300 Mbps you mention is a total bandwidth shared between all users connected to the MikroTik access point (AP).

This means that those 300 Mbps are not for each user individually, but rather a total that is shared among all users connected at the same time.

In a wireless network environment, several factors affect how that shared bandwidth is distributed:

Users quantity

The more users are connected and active, the more the total available bandwidth is divided. If all 10 users are using the network heavily at the same time, each may experience speeds significantly lower than 300 Mbps.

Bandwidth Usage

The actual bandwidth experienced by each user will depend on what they are doing online. For example, bandwidth-intensive activities, such as streaming HD video or downloading large files, will consume more of the shared bandwidth.

Connection Quality

Distance to the AP, physical obstacles, interference from other wireless devices, and the quality of the receiving device can influence the actual speed experienced by each user.

Device Capabilities

Older or less capable devices may not be able to reach the maximum speeds supported by the AP, thus affecting their share of the total available bandwidth.

Traffic Management and QoS

Some MikroTik APs allow you to configure Quality of Service (QoS) to prioritize certain types of traffic over others, which can affect how bandwidth is distributed among users.

In summary, 300 Mbps is the theoretical maximum bandwidth available to all users connected to the AP.

The actual speed each user experiences will depend on the number of active users, the type of network usage, and other factors such as connection quality and specific device capabilities.