When compared to other televisions of this age and spec, the high frequency rate of the 40L1543 of only 50 hertz is one of the slowest. The average high frequency rate of similar spec TVs that came out around the same time as this television is 220Hz.
It may also be worth also looking at one of the alternative 50Hz refresh rate TVs currently available including the Samsung UE46EH5000W which has better reviews.
If this Toshiba TV high frequency rate is not fast enough for you then you might want to look at the 50PFH5300 (60Hz), or the 40PFK4100 (£420.93) (60Hz) both from Philips.
What does "high frequency rate" mean?