Routing between different LAN subnets with different LAN GW

gatewaypfsenserouting

I have a little stupid question, but i'm really stucked.
We have two pfsense in different location.
In first location we have LAN net 10.200.1.0/24 with gateway 10.200.1.1.
In second location we have LAN net 10.200.40.0/24 with gateway 10.200.40.3.

All time we used OpenVPN static connect and all worked fine, but recently we got dedicated canal between two location.
I'm try to setting routing, like this:
Static route to 10.200.40.0/24 through GW 10.200.1.1.
Static route to 10.200.1.0/24 through GW 10.200.40.3.

Okay, it work, but… not good.
We have a traceroute like this:
From 10.200.1.13 => 10.200.1.1 => 10.200.40.51- looks good, but the network was unstable – especially with TCP-connections.
And iperf(for speed test) show like this:

[ ID] Interval > Transfer     Bandwidth 
[  4]   0.00-1.00   sec   256 KBytes  2.09 > Mbits/sec 
[  4]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec 
[  4]   2.00-3.00   sec  0.00 Bytes  0.00 bits/sec 
[  4]   3.00-4.00   sec  0.00 Bytes  0.00 bits/sec
etc.

After i add on local computer 10.200.1.30 route like:

route add 10.200.40.0 255.255.255.0 10.200.40.3

Everything began to work perfectly, iperf show this(with the same settings):

[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  66.5 MBytes   558 Mbits/sec
[  4]   1.00-2.00   sec  68.5 MBytes   574 Mbits/sec
[  4]   2.00-3.00   sec  68.0 MBytes   571 Mbits/sec
[  4]   3.00-4.00   sec  69.6 MBytes   584 Mbits/sec
[  4]   4.00-5.00   sec  46.0 MBytes   386 Mbits/sec
[  4]   5.00-5.24   sec  16.2 MBytes   562 Mbits/sec

And now i'm stucked – how i can push all traffic from 1.0 for 40.0 subnet through remote GW, not for each machine? And vice versa – from 40.0 to 1.0:)
I can't add GW to interface LAN – i get "The gateway address 10.200.40.3 does not lie within one of the chosen interface's subnets.".

Please, help!
Thank you in advance!

UPD:
Oh, sorry, it's very simple scheme – i'm just took this infrastructure without any docs. If you need get more info – please, tell me. Thanks!

scheme

Best Answer

Finally, I solved the problem by setting parameter 121 in dhcp. Networking and routing between subnets works perfectly.

Thank you all for your attention to my problem!

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