Hi,  @JaviAb 

Thank you for posting on our business forum.

We recommend that you configure QoS settings on your ER605 to allocate more bandwidth to your gaming PCs, which may help improve the latency issue you encountered. You can refer to the configuration guide here:How to configure Quality of Service(QoS) on Omada Gateway via Omada Controller | Omada Network Support

We would also like to kindly explain that: when you connect directly to your ISP's original router, you get a stable 32ms latency to the game server, while the latency stays around 37ms when connected through the Omada gateway. This small difference is very likely normal network fluctuation, and will not affect your actual gaming experience in most cases. This few milliseconds of extra latency is generally normal overhead caused by policy routing and data forwarding processing on the ER605. In addition, the latency displayed by game clients usually has an inherent statistical error of around ±2~3ms.

If you are still bothered by this extra latency, you can check your Omada gateway for redundant firewall rules and other unnecessary configuration rules, and try removing these unused rules to see if the latency can be further lowered.

Thank you for your understanding.

  @Jeremy_12 Why I need configure QoS if I have exclusive ISP (600/600) for my gaming PC and if I connect directly to router ISP I have 32ms and with Omada I have 37ms. Also I try QoS in the past and nothing change. 

No you don't understand. Sometimes I have 32ms with Omada and sometimes I have 37. If both PC gaming connect to the same game 1 have 32 and 1 have 37ms and this can change aleatory. Example: 1 game - 1 pc 32ms - 2 pc 37 ms / 2 game - 1 pc 37ms - 2 pc 32ms

For you maybe is not a problem. I'm a competitive player and I need maximum performance. No. It's not normal. 

I spected some people like you can say to me which option can solve this and not put me to try. If I want to try everithing I didn't asking in the first place. 

I try with IA but they give up and say to me the OMADA ER 605 is a bad router. 

Hi,  @JaviAb 
Completely understand your feeling when facing the latency problem as a competitive player. That said, a few gentle clarifications can help frame this issue differently:

A ~5ms base latency difference between connecting directly to your ISP’s gateway vs through the Omada ER605 is actually expected behavior for any third-party router: any routing/NAT processing adds a tiny processing hop, and 5ms is well within the normal, acceptable overhead for a gigabit router like the ER605. It is not an inherent indicator that the router itself is low-quality or defective.

As for the random, swapped 5ms variation between your two PCs across different game sessions: this kind of tiny, inconsistent swing is very rarely caused by the router itself. More often it stems from factors outside of your local hardware: transient routing changes on your ISP’s upstream network that shift your path to the game server, game server-side load balancing that assigns you slightly different backend nodes between matches, or even minor variable processing delays from your PC’s own network power management or firewall rules. 

We can only offer some suggestions to minimize the latency. You may refer to them below:
Disable any unused extra features on the router, which add unnecessary processing overhead.
Set static DHCP leases for both of your gaming PCs on Omada, to eliminate any random ARP lookup delays.
Lock your PCs’ network adapters to a maximum performance power state in your OS, instead of allowing the system to throttle them for power saving.

  @JaviAb I’m also noticing similar latency variation when routing traffic through the ER605. Direct ISP connection stays stable, but through Omada the ping shifts slightly between sessions. It might be related to load balancing or routing rule behavior on dual WAN setup. Still trying to fine-tune the configuration for better stability in 10Win Game