Emulation problems: Nintendo DS emulator (desmume-0.9.4-win32) lags too much!

[NorseChief]

I managed to get a Nintendo Ds roms with the "desmume-0.9.4-win32" emulator and it appears to be the best one out there at the moment.

It runs like a dream most of the time.

The only problem I have with it is that it lags heavy every time it tries to change/load to a new page. I'm sure you know what I am talking about if you have used this specific emulator before.

For example, on the "Brain - train your brain in minutes a day.nds" rom, you load the rom and when you click on "quick play" it lags so badly when it loads the next page. When I click on "brain age check" again it lags and takes a while to move on to the next page.

When I check the "DesmuME 0.9.4 dev + x86 OUTPUT" screen of the emulator when it starts to lag I get the message, "Changing master brightness outside of vblank". This message is repeated like 15 times in the time that it is lagging.

Do you guys perhaps know how I could play this rom on this emulator without this lag in these instances?

[FatTrucker]

Different emulators have different issues and DS is still not properly emulated. No$GBA is still probably the most complete, so I would try using that.