I think I might go back to constantly renewal and see if that avoids the dreaded judder........I'm addicted to 'it'

It's got to be worth a try.  In the past I've had judder and the cure for me was some Bosch blades rather than the OEM.  I also figure that the judder is because the screen is dry.  The current Yeti does not handle the intermittent wipe as good as my previous two versions and sometimes puts in additional wipes when they are not needed even if I set the 'frequency' setting to low?

Doesn't the use of Rain X adversely affect the performance of the auto wipe function by altering the drop formation on the screen in front of the sensor?

Doesn't the use of Rain X adversely affect the performance of the auto wipe function by altering the drop formation on the screen in front of the sensor?

 

Never noticed a problem, not used it on the Snow Monster yet, but I have on 2x Espace, Volvo V70 T5, Volvo XC90 and a Clio all with auto wipers.