[zxaura1]

I guess settings are very fickle one system vs another although I can't understand why?  I doubt your 1060 vs my 960 is a reason.  Each uses the same drivers.  Our panels are different.  I suppose they might EDID handshake differently?  I updated to yesterdays nightly.  All good fwiw so it's not the nightly version.  I have made some changes to my madVR settings but nothing radical?  I suppose I should update those changes in this guide though.  I suggest you start trying some combinations and see if you can arrive at something.  Can't remember what madVR default settings are but try FSE vs FSW.  Also try MPC-HC vs BE.  If you happen to have PDVD or FAB, try those too.  If all else fails for you, you can always give 385.28 a shot with the new Windows update.  The strange thing is, this only happens to you for 3D and HDR titles.  Those involve the panel switching mode side of things vs players imo.  In the past when I had this problem, it didn't matter what was played.  Could be as simple as a cable length issue.  You did install the 64bit version of KODI 18 I presume?

I do agree about different panels can cause different behaviors. Maybe my problem is there, because as I can remember, I always had KODI resizing, even on Krypton (although not in the top left corner). In the next days I will try to connect my HTPC to another LG (not OLED) TV we have and report.
I also used every possible combinations in madVR and tested MPC-HC, but with no luck. I have PowerDVD and FAB but I won't test them because there is no need for me to use them, as I don't  have iso's with menus and PowerDVD can not play MVC 3D mkv, in my system.
When Microsoft give again the new 1809 update I will test it with 385.28 and with newer drivers and report too.