Solved FreeBSD 13.0-BETA2 and slow IO

I build a test system with 13.0-BETA2 and it's very slow with at least IO. Doing "portsnap auto" takes much more time than 12.2. Also when I do "rm -fr /usr/ports" with 12.2 takes 5 seconds and the same command with 13.0-BETA2 takes 100 seconds. The disks are similar 4TB HDD drives on both systems. Is this related to debug enabled in 13.0-BETA2?
 
I install 12.2 in the same system and "rm -fr /usr/ports" was fast. If I upgrade it to 13.0-BETA2 it's slow again.
 
ZFS or UFS? Keep in mind that 13.0 uses ZoF. So there may still be some issues with it.
 
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