Exactly the same here.
Random freezes, it can freeze like 3 or 4 times a day, and then work fine for 3 days with no freezes.
Tested the ram, the ssd, updated the BIOS.
Had the same trouble with windows updates, had to patch manually to install some of them.
I have installed a dozen BXBT-1900 at customers offices, and they almost all face this issue, but some are more impacted than others. For, let's say 70% of them a freeze occurs every month or so, but for 30% of them it's more frequent.
I have noticed that Google Chrome always occupies 40% of CPU time, and it seems like freezes occur only when chrome is on. But i almost always have a dozen Chrome tabs opened so it might not be relevant.
I am quite disappointed about Gigabyte lack of support for this issue, as there seems to be a lot of people in this case. I won't sell Gigabyte products again until this issue is resolved.