REX Options

Hi, first of all sorry if I have posted this in the wrong section or whatever, I know how butt-hurt people get over things like this, so again apologies.

I have GEX Europe, UTX Europe installed and I have REX but I'm afraid to install REX because last time it had a massive impact on my FPS, this was probably down to me choosing ALL of the HD Options.

GEX & UTX are absolutely great, but my only problem is the night lighting. All the lights look very very unrealistc, basically circle blobs of light which dont look too great at low altitudes.

I know the lighting feature in REX is brilliant and last time I had this setup it made the lights look very pretty and realistic, so my question is can I install REX and only have it use the lighting effects?

I think if I can achieve that then my FSX will look good enough for me

Thanks in advance for any help