El problema según he leido es el soporte 4k.
"Creator Rakesh & Kate Reddy hace 4 días

Mike,
The splitter we ship does not work with 4K content.
Peter,
We are currently working on sourcing a 4k Splitter to use with DreamScreen. The splitter not only needs to have HDCP 2.2 compatibility but must downscale to the port with DreamScreen while providing a Bypass 4K content to the other port. We have found a splitter that markets as being able to do this and we have ordered samples of it at this time. We will make it available for purchase if it meets the requirements. The HD Fury splitter we tried did not work well with some of the 4K (HDCP 2.2) sources even without DreamScreen connected to it."

Por cierto yo también tengo HTPC conectado...