Help, support CPM build

Hello everyone,
I have a stuttering/pausing problem when playing a 4K remux (in DV profile 7 FEL I don’t know if this has an impact)
Randomly and approximately every 10 minutes the video jerks or cuts off then resumes 30 seconds later
I read my files locally on a 4TB USB 2.0 HDD

My cache settings:

  • Buffer mode : all
  • Read factor : adaptative (i’ve try on X10 but same problem)
  • Memory size :128mo
  • Chunk size : 1mo

Do you know what this could come from?
I have already tried all possible cache settings

I have CPM A10, is it possible that the problem comes from CPM ?
Thank you for your help