Client Site Low Throughput... Why and How?

[mat_rapit]

Im setup my VPN Server on Windows 7 64Bit 8GB RAM i5MB and 1GB Realtek Network Card.
Server Setting: Using 443 Port.
Using Bridge & Virtual NAT one at a time. ****
OpenVPN, IPSec/L2TP, Azure, DDNS & Gate- DISABLED
ICMP/DNS Function NOT USE.
Port Forward 500, 4500, 1701 & 443.
Network Speed from ISP are 8Mbps Download / 512k upload.

Throughput test result : Commmunication Data Volume in Download : 11Mbps
Total Average Throughput : 6Mbps
-----------------------------------------------------------------------------------------------------------------------
On Client site : Windows 7 64bit, 10Gb RAM i7MB and 1GB Realtek Network Card
Client Setting : TCP Connection 32
Connection Lifetime 50 Second
Use Half Duplex Mode
Use Data compression
Network Speed from ISP are 6Mbps Download / 6Mbps Upload
Throughput test result : Communication Data Volume in Download: 537KBytes
Total Average Throughput : 290 Kbps
**** Im testing using Virtual Nat and Bridge and the result are almost same on client.****

How do i can tweak more so i can get at least 5Mbps on client?
Im setting this up since my workplace got high speed internet and we are facing problem when setup outside office in remote area and sending audio video signal back to office where ISP cannot provide us this high speed internet.

So im thinking about making my office internet into VPN so we can use it outside.

Do assist me.
P/S: I got full clearance to play around from my boss and im a semi-pro IT admin.

[mat_rapit]

UPDATE:
i have set Enabled "Unlimited Number Of Broadcast".

Result still Same as before.

[thisjun]

Please try default setup.

> Client Setting : TCP Connection 32
> Connection Lifetime 50 Second
> Use Half Duplex Mode
> Use Data compression

These are not good for throughput.

[mat_rapit]

Will try and update as soon as posible since im out of office this week.

[mat_rapit]

i Have done it using default value as you said but the result still same.

Here is throughput from Server:
[attachment=2]thruput.PNG[/attachment]

Speed test from Server :
[attachment=1]servernovpn.PNG[/attachment]

Throughput test from Client:
[attachment=0]client.PNG[/attachment]

[mat_rapit]

Client speedtest:
[attachment=1]vpn.PNG[/attachment]

Client site without using VPN:
[attachment=0]novpn.PNG[/attachment]


This post a bit confusing since i dont know how to show image. Sorry.

[mat_rapit]

Hope somebody will help me getting the speed back. Im looking around the client site as i think the problem are there.
P/S: i have access to router on Server Site but not on client site.

[thisjun]

Your server side ISP upload throughput is only 512kbps, so your VPN throughput is fair.