Is there a limit to the number of clients on my Hotspot?

Connectify Hotspot does not limit the number of client devices, but you can reach the limit that your wireless adapter will support. The actual limit will depend on the wireless adapter itself, but most of the common adapters reach the limit somewhere in the 10-20 client range. 

You also should consider the speed of the Internet connection that you are sharing and how much traffic each of the clients will be generating. If you have a lot of clients all trying to use a slow Internet connection, you might see a limit on performance. Lastly, the processor on the machine running the Hotspot could be a limit if you are using a lot of bandwidth.