There should be no need to turn off controllers. There are two pairs of things that are done individually... the cars to their IDs, and the controllers to their IDs. The controllers do not pair directly to the cars with Scalextric Digital, that's only necessary for oXigen.
That said, a solution is probably going to be adding a ferrite man to the guide end of the chip installation. The one on the motor protects the chip from EMI from the motor, but the chip can still get frazzled by too many spikes from lane changers and other places that a braid may touch opposing rails. While the slot.it chips are not as prone to confusion as some of the older DPR Scalextric chips, it's still not a bad idea to have a ferrite man on the guide leads, and definitely worth trying when this kind of thing happens with regularity.
Also, look up "DPR The Solution" here to ensure that your track does not have any places where spikes from momentary shorts can happen. Reducing this at the track level might negate the need for the extra ferrite man, so this is worth doing first.
That said, a solution is probably going to be adding a ferrite man to the guide end of the chip installation. The one on the motor protects the chip from EMI from the motor, but the chip can still get frazzled by too many spikes from lane changers and other places that a braid may touch opposing rails. While the slot.it chips are not as prone to confusion as some of the older DPR Scalextric chips, it's still not a bad idea to have a ferrite man on the guide leads, and definitely worth trying when this kind of thing happens with regularity.
Also, look up "DPR The Solution" here to ensure that your track does not have any places where spikes from momentary shorts can happen. Reducing this at the track level might negate the need for the extra ferrite man, so this is worth doing first.
