Compatibility Question

[Phento]

Hello, I like this mod. It is really a must have for realisms player like me. I have a short question to the compatibility with the mud physics mod, would it work togehter? Best regards

[quadural]

Hi, I can't answer that beacause I only run the MoreRealistic mod.
All I can say = the base game differentials system is pretty "bad" (bad at stabilizing). And so, if the ride is "bumpy", you will lose a bunch of "power". I don't know what the mud physics mod does, but there are a lot of way in this game engine to lose traction performance.
IRL = there is no differential between the front and rear axle, and so, if the front axle is "light" (not enough ballast), the rear axle bears most of the tractive power/force (the avg front wheels speed can't be higher than the rear one)
In the game = this is not the case at all, which means that even if the rear axle is well ballasted, you would lose tractive power because of the front axle which is not properly ballasted (front wheels rotating more quickly than rear axle)
You can also witness very strange behavior = not the same speed at work (or pulling a trailer) in a 100% flat field, depending on the direction (north-south or south-north for example) because how the "terrain response" (ground deformation) affect the wheels.
So, all in all, if you try to play with a "mud physics" mod, you will have to check that you get correct performance in field with the vehicles (or live with it or course, if you don't mind).
I suppose this is also a concern when playing on a map with different "depth" settings than the base game maps. => more depth = more terrain deformation = more differentials performance problems.

PS: if you try to simulate a "no central diff" like IRL by setting a value of 1 for the diffRatio = this is even worst.
Each time the game engine tries to stabilize the differentials speed = lose of power. And so, by setting a value of 1, it will always tries to brake the front wheels or the rear wheels to get the same speed front-rear. And brake means less pulling power.
This is the real issue here I suppose : the game engine, to keep the diffRatio in the wanted range, is braking the wheels.

MR engine is tuned to get something close to IRL on the base maps with vanilla game. (with some limitations due to the differentials of course). I can't guarantee you will get something "nice" by adding another layer which is messing up with the friction/force/damping like I do. (And I do mess up quite a lot, not just slight changes to the base game)

[QuenoGames]

Hello, I like this mod. It is really a must have for realisms player like me. I have a short question to the compatibility with the mud physics mod, would it work togehter? Best regards

Hey, I ran all the MR scripts and all the FS25_MudSystemPhysics scripts through an AI for analysis, and these mods won't work together. Here is the report from Claude:

Analysis Result: FS25_MudSystemPhysics ↔ MoreRealistic
VERDICT: CRITICAL CONFLICT — mods are incompatible

I analyzed all LUA files for both mods and found 3 critical hook conflicts:

WheelPhysics.updateTireFriction (MR completely overwrites the hook (overwrittenFunction without superFunc) → the mud ground multiplier is never applied)

WheelPhysics.updatePhysics (MR completely overwrites the hook → mud braking resistance (__mpMudBrakeExtra) never works on MR vehicles)

WheelPhysics.updateFriction (Both mods have separate moisture systems that completely ignore each other)

[QuenoGames]

You can also witness very strange behavior = not the same speed at work (or pulling a trailer) in a 100% flat field, depending on the direction (north-south or south-north for example) because how the "terrain response" (ground deformation) affect the wheels.

Is this the effect you're talking about?
https://youtu.be/cTcULJ-Wyms?si=ABU5NCrGAhQDL3dl
Because if so, it's really strange why this happens. Are you able to fix it somehow?

[quadural]

yes : on my 100% flat map, I can confirm this bug is really present.
I gave it a try without any rolling resistance (trailer + tractor, no draftforce) = same problem.
I should give it a try with vanilla game, but the problem should remain the same

[QuenoGames]

I had a moment so I tested it with a friend in a tug-of-war, and look how stupid this is. Earlier, we also tested it with a Challenger MT600 and a JD 3650; in one direction, the Challenger couldn't handle the JD, but in the other direction, it did it with no problem

This part of the field was specially leveled to zero so that there wouldn't be any differences
https://youtu.be/uL5ACTNrveQ?si=Eg_1h4t0NqH-8c_K

[quadural]

I gave it a test with only base game (no mod, no MR engine) :
claas 180Hp "little" tractor + big brantner 3 axles full of wheat (no sweat running it in a field or cornering at 50kph... little remind for me, I know why I can't play the base game...)

result in a 100% flat field, not cultivated (wheat) = 29kph in one direction and 20kph in the other direction
=> debug mode + mode 3 (tuning) = no more ground deformation = max speed in every direction (53kph with this tractor)

so, there is something going really wrong with the ground/tire deformation system of the vanilla game. but I don't think we have access to that (low level physics engine)