I'll reply briefly here, but for follow-up posts please point me to one of the other threads where you've raised this issue.
- AMD GPUs have been rock solid on most motherboards, including Designare Z390. The RX 580 seems to be the least problematic.
- Focus your troubleshooting only on a fresh install -- ideally a fresh install in which you haven't migrated any of your apps. You can sign in to iCloud, Messages, FaceTime, etc. but avoid installing any heavy-weight apps. Establish a working baseline.
- Check a bunch of things:
- Use memtest to verify memory.
- Use a 650W or larger power supply.
- Check your 24-pin motherboard cable and any PCI and auxiliary power cables going to the motherboard. Replace cables to see if that makes any difference.
- Do you have a replacement power supply?
- Does the crash happen randomly or always in the same App?
- Is the system stable enough to let you update to 10.14.4?
- Move the graphics card to another slot. Don't worry if the other slot can only provide 8 PCIe lanes or 4 PCIe lanes.
- Update to the latest BIOS and check your BIOS parameters. Enable "Above 4G Decoding".
- Do you have any SSDTs in CLOVER/ACPI/patched? Does it make a difference if you remove them temporarily?
- In your CLOVER/drivers64UEFI folder, are you using VBoxHfs64.efi or HFSPlus-64.efi?
- How many of your internal SATA ports are you using? Have you checked your manual to determine which ones cannot be used when NVMe drive(s) are installed?
- Is your CPU Fan properly connected? Are your temps under control? Did you apply a very thin amount of thermal paste?
- Have you installed the Nvidia card at the same time?
- What other PCIe cards are installed?
Thanks for your fast response.
I tried memtest for 24 hours and didn't have any errors, also on my 3rd ssd i have win10 x64 pro and never had any freezes with all this hardware I have tested so far.
I forgot to mention that also I bought a new psu Corsair Rm850x Gold edition (I had an OCZ Z series 1000w Gold).
I have triple checked all my connections, I tried also to connect my aio Nzxt Kraken x62 to aio pump and CPU fan connector and also for other peripherals I tried other connections w/o solving my issue.
Random freezes happen totally random... most times in idle mode. One strange thing all these last 5 months I have notice is that when I use screensaver and leave for example my system for 2 hours on, I don't have any freezes. So while in screensaver mode its the only time I never had any freezes.
Yes I updated in 15 mins successfully to 10.14.4 w/o issues.
I tried the 2nd pic express x16 w/o luck.
I have updated the bios twice but freezes are still present.
I have enabled in the past "above 4g Decoding" w/o luck also. Also tried many different bios settings.
I have make my custom SSDT for USB but before do this I still had random freezes. Also with custom SSDT on my previews mobo ASUS Prime Z390-A, had random freezes.
I'm using only HFSPlus-64.efi of the 2 you mentioned.
I'm using 5/6 SATA ports and also NVMe 970 Pro 500GB EVO. Manual tells that the 5 port if i remember well will reduce speed if NVMe SATA and not PCIex is used. In 5th port I have a DVD(RW) connected.
Temps in idle mode are mostly at 27C. Temps are very well controlled as Im using a Nzxt Kraken x62 280mm liquid cooler. I made this system mainly for my work which is photography/videography so Im using Resolve, Premiere, FCPX, Photoshop, Lightroom and many others w/o any issues regarding the temps. Also I have changed the thermal paste when I changed my motherboard 3 months ago and still random freezes.
No I didn't try Nvidia with together RX 580 at the same time.
Im not using any other pciex ports.
P.S. When I tried gtx1050 I had to enable "Launch CSM". With Rx580s it wasn't booting so I had it always off.
Also Im using 2x Dell Monitors. I tried to work with one but still had freezes.
Last I have also tried with only one ssd to work but still w/o luck.
A Hackintosh user since 2013 and 4 systems so far w/o issues and using always nvidia gpus. Now I switched to amd I have been doomed trying all this time desperately to find a solution to my problem... and alll of this cause I have take a vow to not going back to windows never again. I was building windows systems for 20 years now and worked also to a big company to pc sales department. The time I tried for 1st time Snow Leopard 10.6.8... it was a love from a first sight! Good days...