I moved the installation and installed chipset mei lan and display drivers but I had weird stuff happening after a while. Firestrike bench would crash on a GPU OC that was 100% stable before (had various GPU and display driver issues that would not manifest in normal day to day use)...thumbnails for images would load super slow when going through photos...my sound playback device would set to my monitor...lots of weird little niggles appeared at different times....
Basically I left install only while setting up overclocks...I knew something of the sort would happen from previous tries...clean install was always going to happen.
Returning from z270 to X99 things got a whole lot worse... RAM related crashes (though I was getting BSODs from Overclocking set up as I fine tuned so some of that second transfer glitching may be due to OS corruption from hard resets/failures)...
In the end however, we have seen time and again on this forum that this leads to many problems...so always recommend clean start on fresh hardware