Thanks for this thread. I have exact the same problem and tried everything including punish my network carrier because i got baited into "peering problems". After several chats in ED Discord i do this (contention con probs). I'm really frustrated because i do weeks of bug fixing with no positive outcome yet. ED has to fix this issue. Luckily i read this issue on reddit.
SP is running flawless! Sometimes i can barely play on Growling but not play at Shadowreaper or Contention. Shadowreaper server are shorty located and stable connection from german hetzner (17ms last hop). Every MP or SP Game play flawless in 4k or VR. This maschine is in heavy use because i have grown kids and i have harder SLA from them as from my customers ;-). I work also in IT, so basic knowledge seems no problem here. ED pls fix this
Hardware:
check my dxdiag below
AMD Ryzen 7 5800X3D
MSI B550-A Pro
64 GB Ram
2 NVME's
7900XTX Nitro+
FlightSIM setup FixedWing
Winwing Hotas (F-16+Shaker KIT + Throttle)
Thrustmaster MFDs (3)
F/A 18 UFC
FlighSIM setup rotary notr used last month so it think its not necessary
What I've done
CPU:
revert undervolting
disable virtualisation
check heat
RAM:
Disable XMP
Reduce Speed
Do testing with Windows and HCI Memtest and Passmark Memtest (advanced test took nearly 16 hours) -> 0 Errors
NVME
Testing
check smart
move to 2 second NVME
check heat
Mainboard:
reset all
disable virtualisation
check if last bios is installed
revert bios
run on low settings
run on stock settings
run on OC settings
Network:
disable DNS encryption
tried various german DNS, Google, Cloudflare, etc.
tried serveral VPN (Proton VPN, Mullad, Icvacy, Nord VPN, Express VPN) local or on Fr!tzbox
tried VPN protocolls (Wireguard, OpenVPN and propiertär)
do traceroutes to blame network carrier
try several network carriers (Deutsche Telekom, Vodafone, Telefonica)
disabled/enable IPV6
enable/disable all firewalls in windows
enable/disable all filter and firewalls in AVM Fr!tzBox
try to connect via WLAN
try to connect via Phones (Pixel 7, Galaxy S24, Galaxy S25) with several mobile providers
do wireshark for network carrier
AV:
run complete without AV
tried other AV
exclude DCS, Savefolder, Appdata temp DCS, SIMAPPPRO, TrackIr, Quest 3 stuff, HP Reverb G2 stuff, Mixed Reality
Windows:
check Event Viewer (found old unused OpenTelemetry Client *lol* -> disabled it -> run Windows with !0! errors)
do DISM, SFC
reinstalled and reset serverall drivers and check if all drivers are up2date
play also with swapfile
pause Bitlocker
Mouse:
changed DPI and polling rates
deinstall all software
Please fix it ED and thanks for the passion and support.
dcs.log DxDiag.txt
Ah forgot sorry. I expect since last big patch very long loading times on "Net SIM Post Start" on all servers. If it helps