As subject says i make alot of my tracks on bgb emulator and then copy them to my drag n derp only to find many tracks cause slow down on my DMG, I try and avoid tables and vibrato but i love them both 
Any advice to reduce this problem, i read that GBC are a little faster would using one prevent slowdown ? Thanks for reading 
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Michigan
THe GBC would help, yes. You could also try splitting your sounds to different files and recording one at a time. For example, recording PU1, then PU2, then WAV, etc.
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Taichung, Taiwan
GBC/GBA SP processors should handle pretty much anything you throw at them.
The GBC CPU can switch over to a faster setting.
If you are iffy about the GBC sound, you can perform the Bass Mod and Noise Filtering Mod, both of which are posted on this forum.
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sweden
Optimize your tables. There is often more then one way to achieve the same sound.
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Sweeeeeeden
If you're not too concerned about authenticity, you could use BGB's audio record function. (But make sure you upgrade to the latest version first!) Then maybe mix it with a noise track from a real DMG for some realism, hehe.
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Toronto, Ontario, Canada
nordloef wrote:
Optimize your tables. There is often more then one way to achieve the same sound.
There really are very few times that I've been forced to use a CGB.
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England
i always found that fast tempos and freaky sample use caused slowdown as well
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Toronto, Ontario, Canada
Jellica wrote:
i always found that fast tempos and freaky sample use caused slowdown as well
I get a lot of visual glitching but no noticeable slowdown.
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Michigan
What BPM are you using? I find that anything above 180 will lag with heavy tables (most notably: V commands across multiple channels), so the only thing I can recommend is to cut your BPM in half and set your main groove to 3/3. Of course, you'll have to rework your tables and the R commands will get wonky. It might be worth a shot...
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Seattle, WA
This doesn't help with things you've already written, but in the future you can halve the BPM and make the groove 3 ticks per step, I end up doing this for any song over 160 or any song I use a halfclock for. It rarely makes a difference unless you're one of those people who likes to use c commands for arps.
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Philadelphia, PA
Have you tried putting in a tempo command? If you increase the tempo during the bits that are slowing down, you could cancel out the slowdown effect. (I've done this before, I...think?) Then put in a command to return the tempo to normal after those sections.
Also, don't use vibrato on more than one channel at once.
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Whateverville, California
For my own work I basically challenge myself to never write anything that bogs the CPU too much. Or if it does, just live with it. I figure If I want more 2X is the logical choice.
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Thanks for all the advice, I got a GBC but I have no experience in soldering or any hardware modding tbh so i cant do the Bass Mod and Noise Filtering Mod mod mentioned, it looks particularly complex. Is there anyone in the preferably in the UK who does these mods?
I have been using bGB for my drafts but i feel the magic comes from the hardware so id rather stick with an actual gameboy (even if its a gbc) for my proper recordings. all tracks I've tried have had no slowdown even my jungle tracks which have liberal use of sample pitch bending which is cool but there is a noticeable high pitch noise