Troubleshooting: Slow Connection / World Not Loading
In early access Hytale, a problem folks have been running into is receiving a slow connection/world not loading error despite your connection being just fine. Let's look at how to identify and resolve this issue.
Is this error affecting my server?
This issue sometimes affects players on Windows. If you're not on a Windows machine, it's likely not your issue. But if you are, look for these identifiers:
Your connection is otherwise fine. Netflix is uninterrupted, but you can't connect on the server.
Your singleplayer world is playable, and the problem only is affecting multiplayer.
Connecting to the server is very slow.
You can't see yourself move, but friends may be able to see you move. Vice versa may also be true.
If you have an Ethernet USB dongle onhand, you can confirm if this is your issue by attempting to connect through that. If that works, this is officially your problem. Proceed to solutions!
So, what's going on exactly?
Hytale uses the QUIC protocol, which is very modern at the current time and may not be fully supported on all computers.
What do you do to fix it?
First, let's move to the settings we need to adjust.
Step 1:
Go to Start and type "network".
Select View Network Connections: Control Panel

Step 2:
Select whatever network you're using to connect to the internet.
Right click and go to Properties.
Within Properties, go to Configure.

Solutions
From here, try the solutions one at a time and check to see if it handled the problem. You may not need to perform all of these actions, and some of these options may not be available for you.
Solution 1
Under the Advanced tab, select Priority & VLAN.
Change the setting to Priority & VLAN Disabled.

Wait for your internet connection to be restored and then attempt to connect to the server again.
Solution 2
Change Recv. Segment Coalescing (IPv4) to Disabled.
Change Recv. Segment Coalescing (IPv6) to Disabled.

Wait for your internet connection to be restored and then attempt to connect to the server again.
Solution 3
Change the following settings to Disabled.
Advanced EEE
ARP Offload
Energy-Efficient Ethernet
Flow Control
Green Ethernet

Solution 4
If none of the solutions above resolve the issue, a more aggressive approach may be required. This involves making deeper configuration changes that can be difficult to undo without reinstalling the driver, as the default values are not preserved.
The values used for this step were sourced from a Reddit discussion linked below: https://reddit.com/r/buildapc/comments/tft3u0/is_realtek_25gbe_lan_issue_fixed/k9evtu0/
Advanced EEE - Disabled
ARP Offload - Disabled
EEE Max Support Speed - 1.0 Gbps Full Duplex
Energy-Efficient Ethernet - Disabled
Flow Control - Disabled
Gigabit Lite - Disabled
Green Ethernet - Disabled
Interrupt Moderation - Disabled
IPv4 Checksum Offload - Rx & Tx Enabled
Jumbo Frame - Disabled
Large Send Offload v2 (IPv4) - Disabled
Large Send Offload v2 (IPv6) - Disabled
Maximum Number of RSS Queues - 4 Queues
Network Address - Not Present
NS Offload - Disabled
Power Saving Mode - Disabled
Priority & VLAN - Disabled
Receive Buffers - 512
Receive Side Scaling - Enabled
Shutdown Wake-On-Lan - Disabled
Speed & Duplex - Auto
TCP Checksum Offload (IPv4) - Disabled
TCP Checksum Offload (IPv6) - Disabled
Transmit Buffers - 1024 (/2048)
UDP Checksum Offload (IPv4) - Disabled
UDP Checksum Offload (IPv6) - Disabled
VLAN ID - 0
Wake of Magic Packet - Disabled
Wake on magic packet when system is in the S0ix power state - Disabled
Wake on pattern match - Disabled
WOL & Shutdown Link Speed - Not Speed Down
Conclusion
If you were running into slow connections or worlds failing to load despite having a stable internet connection, these steps should help narrow down and resolve the issue. In most cases, only one or two of the earlier solutions are needed, so be sure to test after each change rather than applying everything at once.
If the problem persists even after the advanced changes, reinstalling your network driver may be the cleanest way to reset everything back to default.
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