i still saw that post Geforce 7 gen ... but i meant in general
might be a placebo,
although the last time i saw that "pattern" ... my R9 290 (under an Aquatuning WB ) had a little something more, dunno more crisp ... than the subsequent card i owned (which was a GTX 980 Poseidon) even tho she was slightly slower ... and it, indeed, did seem that the perf drop was because of the graphical quality difference
the comparison would be like, between seeing the same game in high settings and mid settings (while being set on max on both cards) the performance hit was also giving me that impression ... oh well as i said ... i'm an oddball, don't mind me ... too much.
that might also be due to the fact that i always had driver issues (mostly, but other issues too ) with Nv (most recent was the GTX 1070) and litteraly no issues with the current card since i bought it (luckily i jumped over the RX 7X00 driver causing issues for the 6X00/6X50 series )