Fc25 brightness goes up and down during a match

To add a little more info on this...

I own an LG OLED and found a method online to permanently disable the auto brightness feature but this does void the TV warranty. 

I will leave it to the reader to decide if this seems worthwhile. 

As that does void the TV warranty, anyone attempting this does so at their own risk. 

Having said that, it has worked out fine for me personally.

Please do reply with the info requested above.

Thanks.