In my opinion, the Windows 10 touch-keyboard is always too large. To make it smaller do this:
- Open regedit
- Go to Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ and create a Key (Schlüsse) called “Scaling”.
- Within, create a string (Zeichenkette) “MonitorSize”
- Set the MonitorSize to a Value (I go for 15 on a 13” FullHD Laptop)
- Crash explorer with task manager and start explorer again (or reboot)
- Play with the value, higher = smaller