I got 892 on 2nd try - and then got gradually worse....
(I'm on an old Vista PC. Not sure if latency is an issue, because my results are sometimes late, sometimes early, roughly equally. Surely latency would mean they'd all be late - or all early? In fact, I think I'm pleased with my result for that reason. If I interpret the results right, I'm holding the tempo
on average, even if each hit is a little early or late, almost alternately. I'm not a machine!)