If you don't have pit sensors, SSDC v 5.4.2 is allowing refuel during track call. I think it's a bug. We just tried it on the track we raced on last night, after our official race, and found that bug. The APB had v 1.06, but I don't think it's an APB code thing, but a SSDC bug.
Did you have any power taps? Was the track all nicely crimped prior to assembly? The low power thing can often happen when there is a loose-ish (but not completely bad) connection. When a lot of cars are in the same area, pulling all those amps, and the connection isn't great, they can take more than the available power, and slow down quite a bit. As they space out again, the problem will appear to go away. Also, if they were magnet cars, sometimes just running around can move the track enough to make and break track connections, just enough for a power loss, and then just enough to make it go away. This is all mainly if the connectors aren't nice and tight when the track is assembled, or if the track has gone through wide temperature fluctuations while assembled since the last time they were crimped.
The other possibility is an SSDC bug. I had a car just stop running during our testing yesterday, but I can't narrow it down to SSDC for sure. Could have been a Rev F DPR chip.
Did you have any power taps? Was the track all nicely crimped prior to assembly? The low power thing can often happen when there is a loose-ish (but not completely bad) connection. When a lot of cars are in the same area, pulling all those amps, and the connection isn't great, they can take more than the available power, and slow down quite a bit. As they space out again, the problem will appear to go away. Also, if they were magnet cars, sometimes just running around can move the track enough to make and break track connections, just enough for a power loss, and then just enough to make it go away. This is all mainly if the connectors aren't nice and tight when the track is assembled, or if the track has gone through wide temperature fluctuations while assembled since the last time they were crimped.
The other possibility is an SSDC bug. I had a car just stop running during our testing yesterday, but I can't narrow it down to SSDC for sure. Could have been a Rev F DPR chip.