With a high frequency rate of only 50 hertz, the 65L9363 has a very slow high frequency rate compared to most of the other 4K and 8K TVs that are a similar age to this TV. The average high frequency rate of TVs that were launched around the same time as this TV is 840Hz, and the high frequency rates range from 50Hz to 3,000Hz.
There are a number of alternative 50Hz refresh rate televisions currently available which you might want to look at including the Toshiba 58L9363 which has better reviews.
If you are looking for a faster high frequency rate then you might want to consider the Philips 55PUS9109/60 (60Hz and higher rated), the LG 40UB800 (100Hz and higher rated), or the LOEWE 54457W80 (100Hz and higher rated).
What does "high frequency rate" mean?