Hey everyone. I'm experiencing a super weird SSD issue with 10.12.4 and was wondering if anyone could point me in the right direction.
I've got an Intel 600p 512GB NVMe that has worked flawlessly right up until the 10.12.4 update. It's running with
RehabMan's patch-nvme/IONVMeFamily.kext and what I'm experiencing is that at completely random times - it could be a couple hours or a couple days or a week - the read and write speeds completely tank, all the way down to about 5MB/s! The system is completely unusable/sluggish at that point.
If I warm reboot, macOS boots back up and the drive is still immediately slow. If I cold reboot, the drive is speedy again at 600MB/s write and 1500MB/s read, but eventually - hours, days, a week - and I'm back to the same 5MB/s read and write issue.
Trim is enabled and the drive is error free, per intel's drive tools (smart/scan etc). The same issue happens when booting into safe mode. I'm not seeing anything strange in the logs.
I thought maybe it was overheating and therefore being throttled, but if I immediately boot into windows, the temp is below 50C, so normal.
I'm at a loss as to what is triggering this, this started happening immediately after updating to 10.12.4.
Any ideas?