Check out this article, specifically for optimizing Network Adapters, with each setting explained: http://www.speedguide.net/articles/n...imization-3449
For Gaming, you may also want to look over the gaming tweaks, specifically the last "Advanced Concepts" section, it deals with general ideas about TCP Offloads, etc. that can also be found in the NIC settings: http://www.speedguide.net/articles/gaming-tweaks-5812
I hope this helps.
As far as testing each of those, it may be hard to do, and unnecessary.
Here's what I would change, just a quick look through them, there is more info in the linked articles:
Adaptive Inter-Frame Spacing: Disabled
Flow Control: Rx & Tx: Enabled <-- disable - can reduce timeouts and improve throghput, some buggy drivers/implementations too
Gigabit Master Slave Mode: Auto Detect
Interrupt Moderation: Enabled <-- disable for a bit lower latency
Interrupt Moderation Rate: Adaptive(other possible values: off, minimal, low, medium, high, extreme) <-- off
IPv4 Checksum Offload: Rx & Tx Enabled
Jumbo Packet: Disabled <-- you can enable this to impvove local LAN throughput with Gigabit switches, not necessary though
Large Send Offload V2(IPv4): Enabled <-- disable
Large Send Offload V2(IPv6): Enabled <-- disable
Locally Administered Address: Not Present
Log Link State Event: Enabled <-- disable - you don't need to log it ?
Maximum Number of RSS Queues: 2 Queues
Packet Priority & VLAN: Packet Priority & VLAN Enabled <-- may be used by WMM/QoS..
Receiver Buffers: 256(minimum value is 80, max - 2048)
Receive Side Scaling: Enabled
Speed & Duplex: Auto Negotiation(works in 100 MB Full Duplex mode) why doesn't it work in Gigabit mode ? Maybe the switch/router doesn't have Gigabit ports, just an observation
TCP Checksum Offload (IPv4): Rx & Tx Enabled
TCP Checksum Offload (IPv6): Rx & Tx Enabled
Transmit Buffers: 512(minimum value is 80, max - 2048) <-- this can be reduced to 256 to reduce buffering for gaming, not that important
UDP Checksum Offload (IPv4): Rx & Tx Enabled
UDP Checksum Offload (IPv6): Rx & Tx Enabled
Wait for Link: Auto Detect