I bought this TV last week, and it's very bad. Yes, the TV is awesome BUT, this model have red-ghosting issues.
To be clear, when you will watch a TV series on Netflix (in 4K/HDR) or when you will play to a video game (for example : Call of Duty Modern Warfare), you will see red ghosting.
This issue concern 99% of the TV sell by Hisense in America and Europe. It's a hardware problem, and you can have more infos on reddit or here : 2020 Hisense H9G / Q9G series 55" & 65" Owners Thread (No Price Talk) | AVS Forum