The reason I asked is because it says in most manufacturers request that EZ ends are not to be used if you want the most stable connection. This would be true of all HDMI extenders, HDBaseT or not.

I am not sure if you are using shielded ends because you are using shielded cat cable or...?

Snap even suggests shielded cable and connectors but I have used them without using shielded stuff and I haven't had anything go bad or have a bad signal or connection. I have practiced doing rj45 ends for a long time before I trusted myself doing them for clients and I have seen all kinds of bad connections from all kinds of installers, even ones in the company I work for. So I would examine the cable and connectors first, since it the easiest thing to screw up and the easiest to fix.