You realise a zero value skips that whole block right?
Speed probably is no issue here, but you’re making it work hard!
It would matter if you’re watching a tilt sensor on a moving part or something like that.

Code:
If Cvar < 13 then
If Cvar > 9 then ShowLCD4
If Cvar > 6 then ShowLCD3
If Cvar > 3 then ShowLCD2
If Cvar != 0 then ShowLCD1
endif // Cvar < 13