Sorry just to clarify, if I wanted to change the leveling rate in the context of FCOM. At the moment, I feel a bit weak at my current level compared to some of the monsters that I face. In the Kvatch Oblivion gate I was forced to pull mob after mob into another cell and fight them there, I was getting 5-6 monsters at once and I would go down in seconds if I stood there to fight.
Unless you have passed level 20 or so, that is the intended behaviour when using FCOM, and not caused by the leveling mod. But you can of course use your leveling mod to work against this FCOM feature - but simply reducing the difficulty a tad is a bit simpler if you don't like that many enemies are stronger than you, with FCOM.
I was a little confused at the way the RL.ini works. I assume I would want to slow down my leveling rate of course, so the default is "set aaRealisticLeveling.levelMax to 65" would I want to lower this or increase this value?
To slow down the speed of leveling compared to skills/attributes - thus facing weaker enemies - you should lower this value. This value is the level you will be when all skills have reached 100, so if you reduce it to 32 (extreme), your skill and attribute increase is unafected, but your level will only be half of the default level.
And what would you recommend? I am playing a Spellsword that is a bit underpowered at the current time, a bit lost here on these settings... I would really like to avoid running another leveling mod. But if it is much simpler and more straightforward then this confusing RL.ini then I will gladly use Progress or the likes. Sorry for the minor hi-jack I could really use some advice here though, before my character becomes even more underpowered.
If you think you're underpowered, then I suggest you lower the difficulty a bit. That is the easiest. But a good alternative is to lower aaRealisticLeveling.levelMax too. How much is of course dependent on how underpowered you feel. If you are level 10 and think your skills/attributes are good for level 8, then lower aaRealisticLeveling.levelMax by 20% to 58.
Progress will not really help you much I think (though it is a mod I recommend), as it controls how fast your skills increase, but not how strong you become compared to enemies.
Another alternative, is to try out my least-popular mod
http://www.tesnexus.com/downloads/file.php?id=26409 is fully compatible with RL, but it takes over the calculation of your player's health, and completely removes any dependency of Endurance on the health calculation. Instead, your health is determined by level only. This means that players choosing to specialize in non-Endurance skills will not end up with lower health and become too weak on higher levels. Level Based Health has a small ini file where you set up your starting health (at level 1), the increase per level, and an optional max health (to prevent you from becoming too strong).