I blunder too much on wooden sets? I have played 99% of my games online, I have seen and learn almost everything related to chess with the fonts Alpha or Mérida, either through diagrams or games, etc .

However, when I play with actual wooden set (or any other material), I blunder too much, I have trouble with my board vision, I completely miss threats and can't really focus well (I play with around half of my strength even with take-backs).


Anyone ever heard or read about this issue?
Are there some tricks I can use to make the process of getting used to them faster, different than the obvious "just play a lot on them"?
Can this issue appear on people who play 99% wooden chess and then try online chess?
I had the same problem which (to some extent) I've managed to overcome. 

I didn't ever get enough chances to practice OTB games so I could never get used to it. My solution was to play online games with a real board in front of me. I made myself play out the moves on the board and used my computer only to get my opponents move and to enter mine. As long as time constraints aren't too much of an issue it's not much hassle. After a while playing with actual boards was just as easy as without.