Guacamole performance in bigger environment and setup?

We have done tests with Guacamole 0.9.12 over the last view month and like how it works and its performance. Do someone have used it already in setups with 1000+ concurrent RDP or VNC connections? Where might could be the bottleneck on the hardware side? I guess beside the network connections,

SSH - size and colors of canvas

Hello, I'm using official JavaScript code and connecting to SSH. Is it possible to: * change width/height of canvas * change colors of terminal? I was able to find only this thread - https://sourceforge.net/p/guacamole/discussion/1110833/thread/97fc1c6b/ . GUAC-1195 is done,