Renaissance-FutureGenetic -2.06%
Renaissance-Mnemonics -2.02%
Renaissance-PageRank -3.67%
Renaissance-ParMnemonics -3.00%

I have been able to repro these on IceLake and CascadeLake type systems.

We are running renaissance-jmh-assembly-0.14.1.jar , here are the run options:

FutureGenetic -t 1 -i 15 -wi 25 -f 10
JmhMnemonics -bm avgt -t 1 -w 9 -wi 10 -r 5 -i 10 -f 10

PageRank requires jvmArgs: -XX:+IgnoreUnrecognizedVMOptions --add-opens=java.base/java.nio=ALL-UNNAMED --add-opens=java.base/sun.nio.ch=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED -XX:-IgnoreUnrecognizedVMOptions

PageRank -bm avgt -t 1 -w 9 -wi 10 -r 5 -i 10 -f 5
ParMnemonics -bm avgt -t 1 -w 9 -wi 10 -r 5 -i 10 -f 10