Wandering Internal clock

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I have been using DP since DP4.5. Recently with the availability for windows, I have decided to take advantage of writing my MIDI drum tracks (I use Superior Drummer 2.0) on my lap top (getting me out of the basement studio for a bit). I was very excited about this until I realized I must be having internal clock issues. My metronome does not keep a steady meter rather, it (along with the programmed drum sounds) wanders slightly, some beats hitting a bit early and others dragging behind (something I have never experienced on a MAC and am not experiencing with DP8 on mac. Interestingly it is random (not the same drum or beat on any given play through). Its driving me nuts. I just want to program some drum lines and with the wandering meter, its just about impossible to write as the feel/groove is just not there. Please help. Maybe its my cheap lap top (Toshiba L505D-S5983). It is a far cry from My new maxed out iMac, but for gosh sakes Im just asking it to keep time, something a computer should be capable of (even an old commodore 64 could do that pretty well. Any thoughts would be greatly appreciated.

[Horobi]

I've not noticed this problem on my laptop (yet!) and use EZdrummer (superiors poor cousin).

What audio interface/drivers are you using? If using on board audio ASIO4ALL seems to give good results for me and I've tried it on a couple of different laptops.

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Im using no interface with the lap top (just programming drums with the intent to transfer the drum tracks to my iMac where all other tracking/mixing etc. Is to be performed.). I use an 828mkii on the iMac, but that obviously has no bearing on my problem. I use whatever driver came with the laptop (or its auto update as this thing is always updating without much explanation)

[NazRat]

Windows Audio is pretty lame as far as latency, so MIDI probably isn't all that great also. I don't know if ASIO4ALL will fix any MIDI issues, but at least audio latency will be improved. You can download ASIO4ALL here http://asio4all.org/. It's not without its own issues, but better than the stock Windows stuff. I think it depends on how well written your onboard audio drivers are. Anyway, ASIO4ALL has been problematic for me, but I have a couple of portable devices with their own asio and MIDI drivers that have no problems.

[Horobi]

I second NazRat, Windows drivers are pretty dodgy for real time audio, try ASIO4ALL and see how you get on it usually works OK with the Realtek chipsets (that I think your laptop has). It should certainly be good enough for doing your drum lines.

I've run some quite big projects on my laptop with DP8 using ASIO4ALL and a realtek chipset on board sound device so it is certainly possible.

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Thanks guys I will try that and let you know.

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Thank you, thank you, thank you! Nothing like having a drummer who can keep time. NazRat, you da man! And thank you as well Horobi!