This is for GT4 NTSC only
This topic's purpose is to define what you how you can do to get best speed and graphics, but also to list the remaining issues.
Known bug:
- GT4 doesn't start? (Old pcsx2 release issue)
=> Try latest pcsx2
=> Disable intro movie (options>misc>...)
=> On older release (setting VU clamp to extra fix this)
=> Get the pnatch patch for skip intro movie
- Cannot pass licences, and many tracks crash?
=> Go 480p (options>screen>...)
- Huge slowdowns at the start of a race?
=> Go 480p
- Crash during race loading -in 480p maybe anyway-?
=> set internal resolution lower than it is right now
- Slowdowns in some part of track (for wide screen): try setting game resolution to 16:9 and gsdx to stretch. Don't play fullscreen, just resize the windows to the size of your monitor. It does reduce the framedrop (It's better than nothing).
-
Recommanded configuration for 60fps @95%: (even in slowdowns it doesnt go under 55 so it is hardly noticiable)
*Hardware*
Cpu 4Ghz+ C2d (e8xxx or e7xxx)
Cpu 3.8ghz+ C2q (q9xxx)
=> you need your cpu to support sse 4.1 to run it smoothly
Graphics 48xx, 38xx ati series
8800gt, 9800xxx, GT 2x0 nvidia
=> you need a good card that support dx10
Recommanded configuration for 60fps @80%:
*Hardware*
Cpu 3.6Ghz+ C2d (e8xxx or e7xxx) 3.8ghz c2d (e5xxx)
Cpu 3.4ghz+ C2q (q9xxx)
=> you need your cpu to support sse 4.1 to run it smoothly
Graphics 48xx, 38xx ati series
8800gt, 9800xxx, GT 2x0 nvidia
=> you need a good card that support dx10
*Software*
Plugins: (always try to get the last one)
Graphics: gsdx 1.1.14
=> Dx10 hardware
=> Vsync on
=> native off, set internal resolution to 800x600, 1024x800, 1280x1024, depending on your graphic card. Try native if your card is just not good enought.
Pad: Lilypad 1.9.10 (support vibration, works great with xbox360 pad)
=> I would recommend to associate right stick vertical axis to triggers -with x360 pads- so that you get analog acceleration and breaking like in forza for instance)
Sound: SPU2-X 1.1.0
=> interpolation linear is recommended, none is fine and slightly faster)
=>set time stretching on
=>set disable effect processing off (except if your cpu is 100% all the way)
===============
Cpu: => Make sure dual core mode is enabled
=> Set fps limit to auto (forget about vu skip or frameskip)
Game fix: None
Patch:
=> Skip intro (optional), see known bug
Speed Hack:
=> IOP X2: on
=> INT Hack: on (doesn't change much seems to stabilize the framerate)
=> EE speed X3: on (try X2 if the game seems slow)
Advanced: (for 0.9.6+ releases only -works for somme before but just to be safe...-)
--best cpu saving cfg, without drawbacks)--
EE round mode: ChopEE clamp mode: none
EE: denormal are zero and flush to zero on
VU round mode: Chop
VU clamp mode: Extra (none work fine but use more cpu!!!)
VU: denormal are zero and flush to zero on
Ok so now you are ready to enjoy GT4 in good conditions... but not in the best one. Here is the goal of the topic: gt4 is almost fine but there is some issues that we need to look at. The pcsx2 team has is doing a GREAT work, and the project is very active. As a gran turismo series fan, it is our mission to make sure our favourite title ever is part of it

Bugs that needs to be fixed
(those you cannot go around at that moment):
- No car reflection (try SW mode and see the difference)
- No road reflection (try SW mode and see the difference)
- Issue about the way circle items turn (wheels, loading menu animation, looks fine in software mode) => the center isn't fixed
- Intense lights kills the framerate (see known bug for partial solution)
=> opera cannot be played smoothly whatever resolution you choose
(issue way less important in svn 377)
- Blinking lights (on night tracks such as opera or hong kong you can see light blinking weirdly and so does headlights)
Feel free to ask me any questions about the game, or to correct what i said or my spelling -i'm french, i do my best-. I really hope that those ennoying bug will get fixed sonner or later.
PS: Keep in mind that i have tested hundreds of possible settings on many SVNs.
Thx to everybody helping improving Gt4 enjoyability on pcsx2

my config (please post yours when reporting bugs):
Win7 beta 7057 (x64)
Q9400 @ 4ghz
Ati 4870 512mb
4gb ddr @ 1ghz