How well does it scale to many simultaneous users? I am using this for a side project. We have training classes where sometimes 10-20 students connect to Wind

How well does it scale to many simultaneous users? I am using this for a side project. We have training classes where sometimes 10-20 students connect to Windows servers using RDP. At times we get a weird key sticking/lagging bug. We haven't figured out how to fix it; we think it's a JVM memory issue but we're not sure.