Same with me! Are you tall? I think because the floor is higher than "normal" cars the foot rests on the floor/accelerator at a different angle to what we,ve become accustomed to , putting more constant pressure on less used muscles which then react accordingly. Like yourself tried all seating options plus cushions , because the roads near me do not lend themselves to cruise control it means the right foot does not get a rest, if you take it off regen kicks in, so you need to put it on level one for a while so you can coast and waggle your leg around . You don,t get this advice in the user manual!