I like the SRAM Rival on my road bike. That said, routing the shifter cables along the handlebar and under the tape the way SRAM and newer Shimano have it does cause more drag. I can really feel it when I ride DH's road bike with Ultegra 6700 with internal shift routing, compared to my Ultegra 6600 with external routing. So no, it's not just you. I would double-check the derailleur hanger like Deb recommended. I also had an odd situation where the RD itself got "stuck" in the wrong position on the hanger. Shifting to the smallest cog, loosening the the RD anchor bolt, and re-tightening it after the RD re-seated itself seemed to fix the issue. Bizarre, I know....