Why does FPS drop only affect DD wheels?
My knowledge about that is insufficient to give a complete explanation. I have been reading (long time ago) on different forums about it. I understood most of it, but can't remember enough to make a correct summary.
Personally: on my previous wheels - Fanatec CSW being the latest in the row - I never felt any lagging due to low fps. But these wheels already show lagging because of how they are constructed (belts etc...). On my Simucube wheel I do feel much more detail, also feel when something is suddenly 'slower', be it fractions of seconds.
DD wheels (the word says it: direct drive) don't have lag, but if the output from the game gets slower for some reason, that gets directly translated to the wheel feel.
About the .ini files:
Three possibilities in order of priority
- in track folder
- in extension > config > tracks
- in extension > config > tracks > loaded
Loaded means that the .ini file can get updates automatically (when this option is enabled in CM).
For tracks that are improved or altered without being made public (yet), extension > config > tracks would be best place, because it then can't be automatically overwritten in case someone makes a new one that could conflict with changes made to the track.
You can put both (I never have them in the track folder) where they belong, no harm to that. Only, when the .ini file gets an update, CM will still take the one in ...tracks, and you won't see the recent changes.