What or robot kit you are connecting (e.g., mBot, Arduino Uno)? What operating system your computer uses?
It is considered a "stable" release that avoids the frequent updates and potential UI changes found in active development versions. Essential Tips for Success Download Page – mBlock mblock 3.4.12
The software runs smoothly on older operating systems and low-spec school computers. It does not require high RAM or advanced graphics hardware. Curricular Consistency What or robot kit you are connecting (e