Thank you for the info.
I think you are referring the application note AN5280 to set up the working environment.
If you using the same system block diagram to use SDRAM as Frame buffer?

If you also using the TWR-K80F150M board?
If yes, could you post your test project here?
I would like to regenerate your mentioned issue on site and check with local application team for further support.
Have a great day,
Mike
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