The problem is when I use off-road mode in stable versions, opera saves almost 80% of data and this is the reason why I prefer opera over others but when I use off-road mode in beta versions, opera can't save even 10%. Another problem in beta versions is the continuous error message while visiting pages.

Can I ask why can't you make off-road mode in beta work just like in stable? Because of unavailability ofproper off-road mode & continuous oopsing, I can never use beta versions but only download it to see the changes going to be made in stable.