Cannot connect between hyper-v on same vswitch

Hi everyone,

I want to simulate 2 clients behind NATs connecting to a public server. For that i created 5 hyper-v under the same host.

I created 3 privates virtuals switch to simulate the 3 distincts network: C1Priv, C2Priv and FakeInternet

Client_1 is on C1Priv, Client_2 is on C2Priv and Server is on FakeInternet. For the routing i created 2 hyper-v with 2 network devices, NAT_1 on C1Priv and FakeInternet, NAT_2 on C2Priv and FakeInternet.

Client_1, Client_2 and Server are running windows 10. Both NATs run PFSense, the FakeInternet being the WAN side, i removed the rules blocking entering packets.

I cannot put an image until my account is verified, so here is the ips setup:

Client_1 192.168.1.1/24 -->   192.168.1.254/24  NAT_1  192.168.3.2/24

                                                                                                                      192.168.3.1/24 Server

Client_2 192.168.2.1/24 -->   192.168.2.254/24  NAT_2  192.168.3.3/24

My problem is that none of the hyper-v on the FakeInternet can ping another machine. I did set static IPs so they are on the same subnet. Did i miss something ? Tell me if you need further informations, thanks for your help.