From what i understood custom was a stripped down version you should use default. What wheel do you have? I have a simucube ultimate and dont have any of the issues you described.
Whats your settings in simucube, like max force your wheel can generate and what max force you set in wheels software. Then whats your settings in AMS2? gain, lfb, fx, damper?
Im using simplicity sw20 v3 it has max 20 nm and i set it to max in wheel software, then use in AMS2 gain at 50 and rest at 0 lfb, fx and damper.
Yes i go back to default flavour in AMS2 as custom may feel better at cornering as forces was not so strong and when i locked tyres and my car go sideway countersteering force was not so strong as at default, but then feeling center was worst and wheel not centering good just starts to oscillating crazy. So i go back to default now wheel centers fast and not oscillating but issue is at fast turns force too strong and when i brake and lock tyres car go sideway i can let off wheel and it want to go back to straight itself which looks feird thats not like real cars acts but i think its more game physics issue.
But you say yo dont have same issues i described, do you understood me correctly whats my issue? You tellin me when you for example brake into left corner and lock wheels and car go sideway your steering wheel not go very strong to right and you must grapple wit it to hold it? Also when road is bumpy it shaking so much. i Saw them wheels in real life shaking too but you can crearly see its not wheels itself shaking but drivers arms as they go over bumps whole cars shake so its driver arms shaking and not hold wheel straight. Thats the issue wit AMS2 ffb tey made too strong forces to simulate bumps on your wheel, in real cars bumps not affect wheels so much it has powersteering. Well i decided to go to default and have those too strong bumps effect, and too strong wheel countersteering just to feel center better, cause i noticed issue persists only if i go online and somebody choose wrong car/track combo to race. I mean set too fast car and too slow track. Like if i drive fastest car in game at Spa or other modern tracks its good. But i go fastest car at slow track with lots of turns, or vintage track with lots of bumps i can barely drive cause of too strong ffb. But if i reduce it i cant feel center good. Also i have all my sims set perfect now and those shaking and too strong countersteering is only in AMS2.
i read somewhere about pCARS2 ffb that you shall lower strength in your wheel and set max gain in pCARS2 for best ffb, i think AMS2 inherit this approach. i remember setting 13 nm max force then gain 60 and it was best ffb i had, but then in my other sims it was worse. So i wont change my wheel settings just for one sim. Even pCARS2 i have set best i had. I have in all my sims almost same setting. Max wheel strenght, in ACC and AC only gain to 50 % rest at 0, in AC gyro=1 but min and max damper at 0, in ACC as i believe it have gyro built in already, but i still has dynamic damping to 0, in pCARS2 gain i have at 100 but volume and tone both at 50 as i saw setting gain at 50 and volume, tone at 100 makes it clipp, and setting gain at 100 then volume and tone at 50 makes it same feeling but without clipping. Same goes for raceroom setting gain at 50 then rest steering force, vertical force, and lateral force at 100 makes it clipp, but setting gain at 100 then steering force, vertical and lateral force at 50 makes it same results but without clipping so racerrom has similar ffb to pCARS2.
i managed to set best settings in my wheel software then set just 50% gain in all my sims thats ACC, AC, pCARS2, raceroom, beam.ng and all works prefect even beam . ng i had gain to 50% but i have smooting there at 100 and steering forces at 200. And in all my sims driving is similar, only pCARS2 is different but i dont thinks i can improve it ever. But AMS2 with gain at 50% i tell you bumps just too strong and too strong countersteering, i mean its good countersteering when you powerslide, but very bad when you press brake and lock tyres and go sideways wheel just takes control of the car away from you as it wants it so badly to straighten it, but that feels so weird i never experienced something like that in any sim.
maybe its because AAMS2 uses 600 Hz ffb refreshing?