diff --git a/scripts/testServer.sh b/scripts/testServer.sh
index 8ab09c9ab9..71faf96b3d 100755
--- a/scripts/testServer.sh
+++ b/scripts/testServer.sh
@@ -79,8 +79,10 @@ fi
 # JVM FLAGS
 #
 
-baseargs="-server -Xmx${PAPER_TEST_MEMORY:-2G} -Dfile.encoding=UTF-8 -XX:MaxGCPauseMillis=50 -XX:+UseG1GC"
-baseargs="$baseargs -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=30 -XX:G1MaxNewSizePercent=70 "
+baseargs="-server -Xmx${PAPER_TEST_MEMORY:-2G} -Dfile.encoding=UTF-8 -XX:MaxGCPauseMillis=150 -XX:+UseG1GC "
+baseargs="$baseargs -DIReallyKnowWhatIAmDoingISwear=1 -XX:TargetSurvivorRatio=90 "
+baseargs="$baseargs -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=50 -XX:G1MaxNewSizePercent=80 "
+baseargs="$baseargs -XX:InitiatingHeapOccupancyPercent=10 -XX:G1MixedGCLiveThresholdPercent=50 "
 baseargs="$baseargs -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5100"
 
 cmd="java ${PAPER_TEST_BASE_JVM_ARGS:-$baseargs} ${PAPER_TEST_EXTRA_JVM_ARGS} -jar $jar"