We need the rest of the information - eg Movie Edit Pro version number as found under Help, About. and is there another graphics card installed?
For 8K video you need Movie Edit Pro 2021 or 2022, however neither of these will run well on the computer with the processor model you have quoted if there is only the Intel GPU present when working with 8K video.
If you have a Nvidia graphics card installed then, for 8K video, you need a GTX 1060 4GB graphics card minimum, however, with the processor you have, the performance is still likely to be poor with import/exporting 8K video.