Extremely long frames caused by suspending and resuming the machine could result in an overflow in the delta smoothing because it uses 32 bit math on delta values measured in nanoseconds.
This PR puts a cap of a second as the maximum frame delta that will be processed by the smoothing, otherwise it returns the frame delta 64 bit value unaltered. It also converts internal math to explicitly use 64 bit integers.
3025b6d299
