I bought a Roku Premiere in 2019 and, a few months ago, it started overheating. It will run for 10-20 minutes and then starts displaying the overheat message. It was connected by an HDMI cable away from the TV so I don't think it was the heat from the TV. I went ahead and ordered the extender just to make sure that didn't have some "magic abilities". It still overheats tho. We even had a fan pointed at it but it still overheats after using it for a few minutes. The unit itself seems totally enclosed. Was there supposed to be some sort of vents on it to keep the internal temperature down? Just wondering if I got a defective one? How prevalent is the overheating? I assume it isn't safe to run it when it is constantly overheating?