Vincent Teoh Discovery of HDTVtest，When using 4K 120Hz mode，Sony X900/HK90 TV (model name depends on region) will be affected by blur。When Sony's PlayStation 5 is connected to a TV，The problem is even visible。
When playing games on the latest Sony PlayStation 5 console with Sony X900/HK90，will display a clear image to the user，But only when 4K mode is locked to 60 Hz。The TV will provide a full RGB signal，and the image will be clear and high quality。but，Once the refresh rate is changed to 120 Hz，the situation is very different。
Vicent discovery，When 120Hz mode is enabled，PS5 actually compresses texture，Even eliminate the crowd。This is because the console has to process more geometry and textures to pass the same image at 120 frames per second。This problem is obviously related to the console，Has nothing to do with TV，But it looks like the panels tested by HDTVTest have hardware limitations，This further reduces the user experience。
When 120 Hz mode is enabled，Sony X900/HK90 will provide a complete 4:4:4Chroma subsampling。What's worse is，In this mode，TV will also be affected by blurred problems。Since the console is released，The company releases a new firmware，The firmware seems to reduce blur only by applying sharpening filters。in other words，It doesn't solve the problem，And it seems that the company will not be able to fix it with software updates。
To test the new firmware，The reviewer actually decides to buy another TV，Another PS5 and another DIRT 5 (this is supported by 4k / 120One of the few games in Hz mode)。The result is self-evident：TV cannot deliver the same image quality as 60 Hz in 120 Hz mode，And the firmware update only partially eliminates the blur effect：
