Hello and welcome to PC Help Forum.
This may not be a router problem.
Have you tried rebooting the modem?Turn off for 1-2 mins then power back on.
When Laptops are to close to the router the connection can become slow or low.
Also that many laptops in same room I would say no wonder your connection drops?
Also who is your internet service providor and what speed broad band do you have?
Are you on dialup or cable?
Also do this on each PC/Laptop,open a web page click on tools scroll to internet options and open it and delete temp files/history/cookies.
Again if this router is connected via usb not eithernet,USB will slow your speed.
Try this on each PC/Laptop
Speedtest.net - The Global Broadband Speed Test
Let us know the results.