IPSEC VTI low speed

[caballeroalba]

Hello, thanks in advance.
I have a problem that I can not solve:
I have 2 pfsense with 32 cores and 16gb of ram connected via IPSEC and I can not get the transfer to be above 130Mbps, the CPU is completely unloaded. I have tried to change the mtu, mss, etc and nothing. The link in both pfsense is 600mpbs / 600mbps.
The routing is done with VTI.
I have tried everything in the forums but I do not get anything.
The only thing left for me to try is to upload kern.ipc.nmbclusters = "1000000" to kern.ipc.nmbclusters = "2000000" but I do not know if it would help.

Can somebody help me?