game lag spikes occasionally

[mnzterr]

Acknowledgement of checking existent issues

• I have checked if my issue has already been reported, and I am certain that my problem has not already been addressed.
• I have attached full logs, screenshots, and other relevant info, and understand that if I haven't, my issue will be closed and ignored.

What problem did you encounter?

the game tends to experience a lag spike every couple of minutes for a solid 3-5 seconds and sometimes full on disconnects me from roblox. i have checked if its my internet connection but that isn't the issue since other applications run as intended and its sober experiencing this.

Roblox Experience link

No response

[Qosmos11]

i have same issue, but i checked logs and only basic roblox startup and nothing. But for now i half fixed this by playing in windowed mode. DE: Cosmos, Distro: Cachy os

[Qosmos11]

try legacy render

[MikaTech-dev]

try legacy render

How do I set that? DE: Gnome, Distro: Bazzite

[Qosmos11]

It doesnt work

[PassiveLemon]

I've also been encountering this issue for a while, and I don't think it's my internet because I don't have a problem with any other service, just Roblox on Sober. I think I remember it starting around late July to early August of this year and in that time I moved somewhere else so I doubt my network has to do with it. When I play Phantom Forces, I frequently experience all player movement come to a stop for a second or two, and then suddenly speed back up.

latest-debug-copy.log
I noticed the lag spikes around 21:19:56, 21:20:24, and 21:22:00. In the log, I noticed that around all of these times, there is stuff about "tombstone", example snippet directly from log file:

info: Roblox: 2025-10-06T21:20:05.520Z,121.520432,3c2546c0,6 [FLog::Output] Settings Date header was Mon, 06 Oct 2025 21:20:04 GMT
info: Roblox: 2025-10-06T21:20:05.520Z,121.520485,3c2546c0,6 [FLog::Output] Settings Date timestamp is 1759785604
info: Roblox: 2025-10-06T21:20:05.528Z,121.528404,3c2546c0,6,Info [DFLog::FlagCache] writeSettingsCache: Writing flags to : /home/lemon/.var/app/org.vinegarhq.Sober/cache/sober/cache/flag_cache.dat
info: Roblox: 2025-10-06T21:20:05.529Z,121.529129,3c2546c0,6,Info [FLog::TombstoneCache] Tombstone 1 read from file: /home/lemon/.var/app/org.vinegarhq.Sober/cache/sober/cache/tombstone.dat
info: Roblox: 2025-10-06T21:20:05.529Z,121.529144,3c2546c0,6,Info [FLog::TombstoneCache] Tombstone check passed: 1
info: Roblox: 2025-10-06T21:20:05.529Z,121.529518,3c2546c0,6,Info [FLog::TombstoneCache] Tombstone 1 written to file: /home/lemon/.var/app/org.vinegarhq.Sober/cache/sober/cache/tombstone.dat
info: Roblox: 2025-10-06T21:20:05.529Z,121.529572,3c2546c0,6,Info [FLog::DynamicFastVariableReloader] DynamicFastVariableReloader finished flag fetch. Tombstone status: invalid

Maybe this helps debug the issue?

[FirewallDaProtogen]

having this happen recently, no logs happen at the time of the lagspikes on my end. on linux mint

[TheWin9User]

Same issue here, ive tried some things but nothing has worked. It is so unplayable now... ping goes from 70 to 2000 incredibly frequently. I think this issue might have to be checked by Sober devs.

[greencow382]

Hey, a friend of mine is having this same issue, I saw this snippet was particularly interesting.

info: Roblox: 2026-01-01T08:54:22.595Z,61.595440,466026c0,12 [DFLog::HttpTraceError] CURLOPT_ERRORBUFFER: Connection timed out after 59999 milliseconds info: Roblox: 2026-01-01T08:54:22.595Z,61.595543,45e016c0,6 [DFLog::WebSocketTraceError] ws: 1 url: http://10.0.2.2:5051 error: HttpError: Timedout info: Roblox: 2026-01-01T08:54:22.595Z,61.595627,45e016c0,12 [DFLog::HttpTraceError] HttpResponse(#8 0x7f955ccc8ab0) time:59999.8ms (net:59999.8ms callback:0.0ms timeInRetryQueue:0.0ms) error:5 message:HttpError: Timedout url:{ "http://10.0.2.2:5051" } ip: external:0 numberOfTimesRetried:0

latest.log

[greencow382]

Actually, I might make this my own issue.

[greencow382]

Actually, I might make this my own issue.

#1575

[github-actions]

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