Rezurrect wrote: ↑21 Jan 2026, 15:57
Hi,
I’m looking for help diagnosing a long-standing timing / latency issue that I’ve experienced across many different PCs, laptops, operating systems, GPUs, and ISPs.
This is not traditional lag:
Ping is consistently low (10–15 ms)
No packet loss or jitter
High FPS and stable frametimes
Issue is consistent offline vs bots as well
Yet gameplay feels temporally delayed, as if my client simulation is behind the server or behind reality.
Symptoms:
In games like Rocket League, Fortnite, Roblox, Rivals:
Opponents reach the ball first even when I’m visibly closer
I get demo’d / hit after I’ve already jumped or moved
50/50s feel unwinnable
Issue persists even vs bots (e.g. Nexto in Rocket League)
App cold starts on Windows (Explorer, Chrome, Discord) consistently take 5–10 seconds even on fast NVMe systems
Gameplay never feels “correct” or aligned
Critical observations:
Playing remotely on a friend’s PC (remote control / screen share) feels correct and responsive
Cloud gaming does not fix it
One older HP EliteBook laptop worked perfectly
Fedora Linux improves the issue noticeably (especially with gamescope), but does not fully eliminate it
Proxmox + Windows VM did not fix it
Moving the same SSD:
Works fine in a laptop
Immediately has the issue in my desktop
Works fine again when returned to the laptop
This strongly suggests a platform-level timing issue, not OS corruption.
Hardware / OS scope
My Current PC Specs: I5-12400F, 32GB DDR5 4800, AsRock H610M-HDV/M.2, Corsair RM750e, Samsung 980 NVMe, RX 9060XT 8GB.
Tested across:
CPUs: Intel i5-12400F, i9-12900F multiple laptop CPUs
GPUs: RX 580, RTX 2070 Super, RTX 3080, RX 5700 XT, RX 9060 XT
Motherboards: Gigabyte B550, ASUS B760M, ASRock H610M
RAM: DDR4 & DDR5
Storage: multiple NVMe & SATA SSDs
PSUs: Corsair RM750e, CV550
Monitors: Alienware AW2521HF (240 Hz), BenQ Zowie
Ethernet only, multiple NICs, 8+ ISPs
OS tested:
Windows 10, Windows 11, Windows Server 2022, LTSC
Custom / stripped Windows ISOs
Fedora Linux (best so far)
Proxmox (Linux host + Windows guest)
What I’ve already ruled out
ISP / routing issues
IPv6, VPNs
Peripherals
GPU drivers (many versions)
BIOS defaults vs tweaked
C-states, SpeedShift, ASPM, turbo on/off
HPET on/off
Timer tools (ISLC, timer resolution tools)
MSI vs legacy interrupts
DPC latency problems
Current suspicion
This feels like a clock / timing coherence issue, possibly involving:
TSC / QPC instability
Power management affecting clock determinism
Display pipeline buffering (DWM / scanout timing)
Scheduler / compositor behavior
The fact that Fedora + gamescope improves consistency suggests Windows display & timing layers may be amplifying an underlying platform problem.
I’m not looking for generic tweaks or reinstall advice — I’m trying to understand why client timing is consistently late and how to force deterministic timing / scanout.
Any insight from people familiar with:
input lag vs scanout lag
frame pacing vs simulation timing
OS clock behavior
display pipeline latency
would be hugely appreciated.