note: these are my settings and they work for me, no debate is needed, other people use other settings and are as happy as me with their G25 and in game experience.
1. i don't use the profilers, it doesn't even start, there is a tickbox somewhere that stops it from loading.
2. windows control panel / game controller
rotation : 602 degrees
force feedback enabled
overall strength : 100 %
spring effect : 100 %
damping effect : 100 %
centre spring enabled
centre spring strength : 79 %
i use these setting for all sims GTL / GTR2 and rFactor for all MODs