I’m parallel compressing synths and… nothings happening. Help?

So I’m SLAMMING these compressor settings on my duplicate send lead track right? 10:1 ratio, lowered my threshold down enough to give me -16dbs of gain reduction, attack at.3ms, and release around 50ms. This should be enough to give me the weight that I want to put on my leads.

I start feeding the squashed track into my dry one and, little to no difference at all. It just sounds like I turned the volume up. I parallel compress my drums just fine to get the weight I need, so how is this any different? My guess is the internal delay that plungins have in fl studio is causing phasing issues? Would that be a factor?

I’d appreciate the help from anyone. Thanks.