Horizon Client Remote Desktop freezes or very slow while accessing through windows RDP

[techman2015]

The user connects to his office windows PC (PC-1)  through windows RDP from his laptop (PC-2) at home, and then the user connect to customer PC (PC-3) using Horizon Client from Office PC. In this scenario the connection to PC-3 is very slow, mouse cursor jumps and hangs frequently, but connection from PC-1 to PC-2 is fine. But if the user directly work from PC-2 console, ie. from office, the horizon connection to PC-3 work fine without any issues.

The scenario is as below: (All systems are windows 10)

PC-1 at Home  -----(SSL VPN and RDP)----->PC-2 at Office-----(Internet and Horizon Client)----->PC3 at Customer site

a) Very slow/ freezes and mouse cursor hang while accessing PC-3 from PC-1

b) Good performance while accessing PC-3 from PC-2

c) Good performance while accessing PC-2 from PC-1

When tested there are no bandwidth/latency issues in between these three systems.

So, Is there any possible known issues if we connect to a remote windows system using windows RDP, and from that system we use horizon client to access another remote system?

[vBritinUSA]

If I understand this, the VPN typically uses UDP and RDP to PC 2 that uses TCP (So we have TCP running over a UDP tunnel) and then use the Horizon to connect to a desktop what could be using UDP or TCP.

Not sure this is ever going to work well tbh. You could force the VPN to be TCP but RDP is still going to use TCP, this is why PCoIP and Blast work some much better than RDP is due to being able to adapt and use UDP.

Can you not install the Horizon client on PC-1 and connect directly to PC3 and call it a day