<p>FCEUX may not run well on slower CPU's. You can improve performance by setting sound to low quality in the<aclass="rvts18"href="SoundOptions.html"> Sound Dialog</a>.</p>
<p>In addition, for windowed mode try enabling hardware acceleration in the <aclass="rvts18"href="Video.html">Video config</a> dialog.</p>
<p>Also ensure that you're using the Old PPU, because the New PPU engine is very slow. Check Config -> PPU -> Old PPU.</p>
<p>On slower computers, savestates can be slow with long movies. A small speedup can be done by disabling config > enable > Backup savestates.</p>
<p>There's no such thing as a universally right palette for NES games.</p>
<p>FCEUX uses the color palette of the old FCEU / FCEUXD branches. Also FCEUX comes pre-packaged with several additional color palettes. For more information see <aclass="rvts18"href="Palette.html">Palette config</a> and <aclass="rvts18"href="PaletteOptions.html">Palette options</a>.</p>
<p>Depending on what version of FCEU / Game your .fcm was made, there maybe a number of sync issues. These are listed in detail at <aclass="rvts18"href="http://tasvideos.org/ConvertFCMtoFM2.html"target="_blank">http://tasvideos.org/ConvertFCMtoFM2.html</a>.</p>
<p>FCEUX requires the FDS Bios to be named <spanclass="rvts33">disksys.rom</span>. It must be located in the root directory (where fceux.exe is stored) or in the folder of the FDS Directory override (see <aclass="rvts18"href="Directories.html">Directory overrides</a>).</p>
<p>While FCEUX has a <aclass="rvts18"href="GameGenieEncoderDecoder.html">Game Genie code converter</a>, you can also use game genie codes with the game genie rom. It must be named gg.rom and be placed in the root directory (where fceux.exe is stored). You must also check NES -> Game Genie in the main menu.</p>
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