checkm coverage issue

[confusedWXX]

Hi experts, I have the confusions when I used the checkm coverage. I found more than half of my reads failing QC according to checkm program. However, my reads were cleaned and passed QC initially. That's a bit weird. Another issue I met was checkm coverage program is easily stuck when processing reads, does it mean the RAM of my work station is not enough?

Thanks a lot!

Best Regards,
Wenxuan