4K and 8K TVs that have been around for a comparable time to this television have high frequency rates of between 50Hz and 1,800Hz, and the average high frequency rate is 310Hz. The KD-43XD8005 has one of the slower high frequency rates (only 50 hertz) amongst TVs of this age.
We think you might also be interested in some of the other 50Hz refresh rate TVs currently available including the Sony KD-49XD8005 (£799.37) which has better reviews.
Televisions with a faster high frequency rate that might be worth considering include the KD-55XE9305 (£2,395) (60Hz and higher rated), or the KD-65XE9305 (£3,195) (60Hz and higher rated) both from Sony.
What does "high frequency rate" mean?