Does anyone else have problems with the rate response setting on their device? I had to have it switched off on my previous dual chamber pacemaker and now also on my latest CRT D upgrade. I am 100% paced and it is set at 80. No matter what the device team did to try and rectify it, if I merely bent down to pick something up from the floor, my rate would soar in seconds to 150. So I have to have it off, but it means that my rate stays at 80 and I am puffed out doing anything exerting.