Just another update here. Yesterday received the major Windows 10 update. All my existing C driver contents, including Windows folder, program files, were placed in Windows.old folder and only 8 GB was left. I cleaned that using Disk Cleanup Windows app and selecting System files. Although was a bit scared due to custom nature of this Tablet, nothing happened. After that I have used IOBit Driver Updater 3.1 to update all the drivers, total 34 of them, including Audio, Video, touch screen, Thermal etc.
Just finished that. Now the thing is I am feeling it right away that the performance has been increased considerably. The Web Browsers are opening more quickly, switch between portraits and Landscape modes are very fast and so does the WiFi performance.
Teclast X98 Pro,Asus Zenbook UX303-LA (i5 5200, QHD+), Dell Latitude 7350, Nexus 9, Samsung Tab 8.4 pro