Emulators Play Roms Too Quickly, Mysteriously

[SeverThe7th]

Okay, i just went to my emulators to try some roms and found they are all playing games too quickly. I played a rom maybe 1-2 months ago and it seemed to work fine. Now they are going quick and it isnt just from one emulator, these three seem to be quicker. Thats very weird that 3 suddenly do this when before they played perfectly.

Nes emulator - FCEU
Snes emulator - Snes9x
Gba emulator - VisualBoyAdvance

A DS emulator seems to be going fine as well as the PSX one. I havent changed any settings on my comp, that i remember. I noticed it after upgrading to the newest FECEUX one 2.15.

My system specs are-

OS: XP Home ed 2002 SP3
CPU: Intel (R) Core (TM) 2 Duo CPU E7600 @ 3.06 GHz
Ram: 3.25 GB
Video: NVIDIA GeForce 9400 GT
Sound: I think its just built in, no sound card its Realtek

Im not sure what else to say, to give an indication as what it could be. Has anyone had a problem like this before?

Edit: Actually im not absolutely sure about the GBA one, it would only be a little bit faster though it may be my imagination. The Nes and Snes are definitely faster though, like 1.3, 1.4 times faster.

[Ed Oscuro]

Ram: 3.25 GB
Hmm, that's odd...and the graphics card is a 256MB model, which would still only get you to 3.5GB...custom built PC? That's probably no big deal (in this case) though. Just a 32-bit oddity.

Anyway, did you try this menu option in FCEUX?
NES -> Emulation Speed -> Normal Speed.

[SeverThe7th]

Yeah, that was one of the only things i tried along with the timing things. It only does it increments of 25% than later higher percentages. Its at 100%.
Edit
it was custom built, though it wasnt put together by me.

[SeverThe7th]

Okay turns out i was being a total hypochondriac and it was just one rom (SMB), yet i convinced myself (placebo effect) that it was other roms too. *Forehead Slap*

I sincerely aplogize for making the thread. It can be locked and or deleted.

[MidnightRider]

Just a little advice. You have to accept that emulation isn't perfect. In some cases it helps to have a 2nd, or possibly even 3rd emulator, especially in a case like the NES with all the individual mappers. I would recommend picking up NEStopia as well, in that case. Perhaps for SNES something like SNESGT, or if you're willing to put up with it's awkward rom format, BSNES.

[kedawa]

Most speed issues I've run into are PAL/NTSC related, but that can affect the actual physical game as well.

[Frankie_Says_Relax]

Okay turns out i was being a total hypochondriac and it was just one rom (SMB), yet i convinced myself (placebo effect) that it was other roms too. *Forehead Slap*

I sincerely aplogize for making the thread. It can be locked and or deleted.

Your wish. My command!