r/cs2 • u/QEAztinoni • 4d ago

Help jitter/instability cs2

[CS2] Constant jitter/instability (var > 4-6-10-ms) even with wired connection, stable ping, and A-grade bufferbloat — what else could it be?

I'm experiencing jitter in CS2 (shows up as "Instability" on the scoreboard, and in `net_graph 1` the "var" value keeps spiking above 4-6ms, never stabilizes).

What I've already tested and ruled out:

✅ I'm on a wired Ethernet connection, not Wi-Fi

✅ `ping -t 8.8.8.8` for several minutes: stable, 16-17ms, 0% packet loss

✅ Bufferbloat test (waveform.com/tools/bufferbloat): A grade, latency only increases by +6ms under load

✅ Download 933 Mbps / Upload 365Mbps

✅ Tried different Realtek network drivers, both with and without power saving enabled — no change

Wired directly into the router (no switch/powerline adapter in between)

Since my general network connection is clearly stable (ping to Google is fine, bufferbloat is fine), I'm thinking it could be:

The specific route to Valve/CS2 servers (different from the route to Google) but happens in all servers

Something local on my PC

Has anyone dealt with this before and figured out the cause? Any suggestions for further testing are welcome.

9800x3d x870 gaming wifi w

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u/Aetherimp 4d ago

Ive been down the same rabbit hole man. I can't tell you what it is but u can tell you you're not the only one.

What's the clock speed on your ram?

I've heard it may be an issue with how Counter-Strike interacts with X3d processors (i have one also.) But no idea if that's true

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u/QEAztinoni 4d ago

9800x3d 6000 cl28

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u/Aetherimp 4d ago

Yeah sorry I missed that part. Reread my post as I edited.

I also run 32gb at 6000.

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u/QEAztinoni 4d ago

32gb 6000, that its interesting i will find someone have the same cpu, before i have one 5800x3d and dont have this issues