SQM for gaming and streaming still causing lag spikes

aaaandrew · 2025-02-18T05:16:17.819Z

New MT6000 Flint 2

I bought the router for improving the stability of PC gaming while the TVs are being used for Netflix etc. I'm on a 100/20 VDSL line. It's a helped a lot but I get stutter every few seconds which I assume as the TV buffers a few more frames.

I was hoping SQM would with per host isolation prevent this from happening, I can use a synthetic tool below to show the problem (only occurs when the TV is running), in actual games the effect is much more pronounced it'll show as a visible stutter/lag.

I'm running CAKE with host isolation on, overhead 22 and MPU 68, and I've tried quite a few combinations of this.

jitter-netflix715×366 19 KB

Device Model MT6000 Flint 2
Firmware version 4.7.0
Screenshots
Network topology diagram INTERNET -> RJ12 -> DLINK 245GE modem -> Flint 2 router -> LAN
Problem description

aaaandrew · 2025-02-18T06:32:20.528Z

I turned off hardware acceleration which had the same problem. SQM won't work while thats on. duh. I get A+ on bufferbloat now, but the latency spikes persist.

Regardless of hardware acceleration, SQM, or nothing, I get these lag spikes with streaming on the network. Is there any possible config that will help?

bruce · 2025-02-19T01:45:23.655Z

Hello,

From your screenshot, the average delay is not bad.

If all client devices (PC, TV, etc.) are directly connected to DLINK modem, will it improve lag and delay?
Reset the firmware for the Flint 2, with the default settings, is the TV smooth to play?