Z390 Taichi Bios 1.80 problems

Thanks Teegale for the recommendations.   I did load all the latest drivers on Samsung's website and also Samsung Magician.   I initially installed my NVMe drive in M.2 port 3 but then decided to move it to port 1.   The reason I did this was because I noticed that the mounting points in slot 1 were better suited to the size of the 970 EVO. Also, I noticed some other people who had this same setup using slot 1.   So I decided to go with that. I wish that this MOBO came with heat sinks for all 3 M.2 ports.   Do you happen to know if ASRock sells spare heatsinks for ports 1 and 2 or if they are available from a 3rd party?

Still no go with 1.80, flashed it after a fresh d/l from ASRock and it still slows my machine to a crawl. I'll stay with 1.60, at least it works.

Hi Everyone, new here, joined to join this discussion, wish I would have searched for this yesterday!

I am also having the same problem as everyone else. Downgrading to 1.60 immediately resolved the issue.

I saw a few questions asked above so I'll try to answer those here and also will tell what steps I did to troubleshoot...

Question: Where can I find the 1.60 bios to downgrade?
Answer: It's on the asrock website - I went to the motherboard page then to support, then bios, and there are 4 different versions listed, I've used the Instant flash 1.60 one to downgrade.
[URL= https://www.asrock.com/MB/Intel/Z390%20Taichi/index.us.asp#BIOS]https://www.asrock.com/MB/Intel/Z390%20Taichi/index.us.asp#BIOS[/URL]

My specifics:
Brand new machine, i7-9700k, Samsung 1TB 970EVO NVME in the 3rd (heatsink) slot, no other drives, 32GB ram in dual channel (2x16) Standard z390 Taichi, not the ultimate.

I had installed windows for the first time about a week ago with BIOS 1.60, and everything was running great. I've rebooted, powered off and powered on from scratch, plenty of times to have a feel for what the login process was like before.

On 12-22-2018 I downloaded 1.80 from asrock.com and used the USB method to update my machine on the same day.
Everything was immediately awful.
I also did a reset cmos both via the switch on the IO panel, and also from within the bios.

On 12-23-2018 I downgraded to 1.60, fetching the 1.60 bios from asrock.com. I used a second machine for this to avoid any issues.

Note: I was able to put both bios versions on the same USB stick, and instant flash presented me with a list to choose from.
Note2: User Teegale mentioned a second flash fixed the issue and suspected that asrock had fixed the bios online, however that was posted on 12-19, prior to my downloading the file

Note: After the first boot when it was hanging big time, I finally got into Task manager and noticed system interrupts were taking 18% of the CPU - this seemed wrong.

Note: I have never run or installed any samsung drivers, nor updated bios, but installed Magician, and it shows I have the latest Firmware. Running on bios 1.60, magician showed 3549 read, 2461 write, with 368,408 read iops and 303,222 write-iops.

Ok I think that's all the relevant details on mine - I'm really thankful everyone else posted here - the information was really helpful!

- Jack

I'd also like to add that I'm on Windows 10 1809 with every update installed from Windows update. Again, I doubt that's the issue but you never know.

No, but I'll try it one day, switched out the board for an MSI Godlike, the Taichi is now sat in a cupboard whilst I decide what to do with it.