On my hackintosh fcp export is very slow,

Hi there
On my hackintosh fcp export is very slow, using msi rx 6800xt it takes 32 minutes to export a 20 minute file. When I export the same file to my other hackintosh using 6600xt, it takes only 14 minutes to export. help me bro

this is my system config

cpu i9 10900k

mb. gigabyte z490 ud

gpu amd rx 6800xt

ram 32 gb