Take care when you use his files to check in setup that you are using them. This was my first error. One more thing. In any case, NeoGeo group appears empty.
I've checked again and the problem is solved with DazzleHP's files. I've returned to my files (the most recent availables) and the problem occurs again.
My actual settings are "crazy" because I've tried to deactivate everything I could. I will configure as I think (I'm a experimented GameEx user) it should works fine, and then I will post the files. It is strange that all emulators (including Demul) runs fine if they are launched from EmuLoader or Hyperspin. What is more, I'm running GameEx with the same configuration in a Mac Mini Dual Core with 4 Gb too, and in a i5 with 16 Gb at full speed both with w7, and runs perfectly. The only issue is with the PC described. I've tried a fresh new installation too.
My PC: Intel Quad 2.6GHz 4Gb RAM Nvidia GT 240 Windows 7 64 bits My GameEx doesn't run smooth and I've disable every effect, sound, video... The movement around lines in menus is slow and with lag. What is more: If i launch MAME with it, the game freeze for a moment each 3 o 4 seconds. If I run MAME with the same configuration but without been launched from GameEx, it runs perfect. I think that this PC should run GameEx perfectly, isn't it?