[AlexanderTheOK]

Thanks for the input. I was actually using all four analog inputs before. The code above is only here to demonstrate the issue, and to show that it isn't caused by anything like multithreading of my own. Again, with all four inputs, the first is still the only one to count, no matter which one it is, 0,1,2, or 3. Each works fine on their own, but no more than one functional counter can be created it seems.

Does anyone know a different way to do rollovers? I've been experiencing lag spikes in actual code up to 200ms so simply running code that manually checks for rising and falling edges doesnt quite work. I't misses ticks sometimes.

I'll try to use interrupts today to see if I can avoid the above problem (the lag). Will report if it works or not.