It needs either a change to the offside rule that accounts for the VAR era or they simply make it a visual VAR check minus the lines, that if it’s clear and obvious is awarded as offside, if not, it isn’t given. Should take 30 seconds tops.
Said it before, two replay rule. If it's not obvious from that then stick with the onfield decision. Ditch the lines across the pitch bollocks.
They should also stick a 30 second limit on it full stop, would make a huge difference.

