Ripping a 4k uhd disk

[Wire1078]

Hi before I updated make mkv my rip time for a 4k uhd disk was no more than 1hr. Now it's taking more like 4hrs to rip a disk. Is there anything I need to change to quicken up the time?
I'm using the asaus bw-161ht firmware 3.01
Reaf speed only get to 3.0x max
Thanks

[d00zah]

MakeMKV drive speed control

[ben_uk]

Also, make sure you arent ripping unnessesary playlists which are often duplicates. If you see a file size which is exactly the same, choose the one with chapters listed and untick the one with no chapters.