Wireless HDMI gets hot quickly

I was told the thread I intended to post on was more than 30 days old, and I am to start a new thread myself.

I have a question to members who use wireless hdmi........
Mine got hot quickly. That makes me hesitant to use them in extended period of time. I use them to play video games.
Anyone also has this issue?
Thank you.

Adding : I paid $90.39 Canadian ( tax included) for them.