Here is some info from an old thread about the P&G mod which may help -
"GTR2 (P&G) .PLR FILE OPTIMIZATIONS
GENERAL OPTIMIZATIONS FOR BETTER FRAMERATES:
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Here are some general optimizations that should help give you better FPS with your GTR2-PnG installation -- many of these tweaks were originally taken from various postings indicating tweaks that worked well for GTL, but these apply to GTR2 as well (and thus the PnG mod). Thanks to DucFreak for a lot of these details (most of them, in fact):
Quote:
Open the "Your-Player-Name".PLR file with notepad (the file is located at ...\GTR2-PnG\UserData\your-player-name folder), search these lines and change their values (please note that they were not written in order here):
[ Graphic Options ]
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Compressed Textures="0" // set to "1" for better framerates on very low-end systems
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Driver Animations="1" // set to "0" for better framerates on low-end systems; this will NOT disable your visible driver arms or moving steering wheel in YOUR car
Track Animations="0" // recommend set to "0" for better performance on all systems
Disable All Character Anims="1" // recommend set to "0" for most systems (BIG framerate hog)
Windscreen dirt buildup="1" // set to "0" for slightly better framerates on very low-end systems
Swaying Trees="0" // recommend set to "0" for ALL systems (eye-candy you won't miss)
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LOD Multiplier Multiplier="1.00250" // change value to "0.99000"
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Livery UltraRez="0" // recommend set to "0" for better performance on all systems
Cockpit UltraRez="1" // recommend set to "0" for most systems
Reduced Track Textures="0" // recommend set to "1" for better framerates on very low-end systems
[ Game Options ]
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Vertex Damage="0" // set to "0" for better performance on all systems
GENERAL CONSIDERATIONS:
Make sure your video card is sufficient to support DX9.0 shaders -- if you're struggling with lower framerates, try switching to DX8.0 shaders; this is a good option on lower-end systems and you don't give up much in the way of eye candy. Having a newer video card doesn't necessarily mean you're set to run DX9.0 -- a GeForce 6800 will offer you much better performance than a 7300GT or a 7600GS card, for example, and an ATI X800XL or X800XT will give you stellar performance in DX9.0.
OPTIMIZING IN-GAME SETTINGS:
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Most of these settings can be found in the Options - Video and Options - Advanced menu sections (these can also be set in the .PLR file, but it's easier to make sure you've got them selected properly by checking the selections in-game):
DRAW DISTANCE -- using “Very Far” draw distance is not much of a FPS killer but better use "Normal" draw distance, it's more than enough and definitely keeps FPS much more stabilized (less variation of FPS around the track -- recommend NORMAL)
TRACK DETAIL -- can be a FPS killer if it's on FULL, decrease it to HIGH or MEDIUM.
SHADOWS -- using shadows in MAX is another FPS killer, HIGH or MEDIUM is the best option.(recommend MEDIUM)
SPECIAL EFFECTS -- big FPS killer in HIGH or FULL . . . reduce to MEDIUM or LOW
VEHICLE DETAIL (both settings) -- recommend setting to MEDIUM
TRACKSIDE CHARACTERS -- de-select (no green light)
PITCREW DETAIL -- set to PLAYER-ONLY
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Using these settings, I get between 85 - 100 FPS or greater on my system, which is a pretty low-end system these days: Socket 754 Athlon 3000+ @ 2.45 GHz, 1 GB RAM, 256 MB ATI Radeon X800XT (stock frequencies, not overclocked). Those of you with higher-end systems might be able to set things a bit higher, but things like "Swaying Trees" and "Character Anims" can cause things like stuttering and framerate dips, both of which can be especially bad when racing online.
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Wanted to add this in, as I just discovered it myself -- I'm not sure if this applies to GeForce users, but this does apply to ATI users (at least on my system with my Radeon X800XT All-In-Wonder card):
Make sure you have the refresh rate for your monitor (Display Properties --> Advanced--> Monitor --> Refresh Rate) set to the same frequency used in your GTR2 Configuration (GTR2Config.exe) application. I had my monitor refresh rate in the Display Properties set to 75Hz, but I had 60Hz selected in my GTR2Config.exe application and I was starting to see jerky/stuttering behavior at some add-on tracks. It was something I hadn't experienced with my X800XT card, and it was happening even with solid, reasonably-high framerates (rock-solid at 60fps at Pau 2001, for example).
I hadn't been having a problem before, but it started all at once after I had done some tweaking -- one tweak I did was to change my display resolution in the GTR2Config.exe application from 1280 x 1024 to 1280 x 960 to better fit my monitor aspect ratio. I didn't change ANYTHING else, but I started seeing odd/weird behaviors, including the stuttering/jerky behavior as well as odd stuff like flashing trees and scenery.
Setting my refresh rates to match (both set to 75Hz) solved the problem.
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Disable the Anti-Virus while you play... or simply disable the "realtime scanner" on the A.V. while you play (this is in case your A.V. supports this feature), many times this is the culprit."
