Through years of assisting users with lag issues on Newwind, we've identified several common causes. Below are the recommended steps to resolve them:

Lagging Out Whilst Logging In/Teleporting/Loading Chunks:

This is caused by the internet connection between your computer and Newwind being too slow.

If you have slow internet in general, reducing your render distance in the options menu will improve your connection, as it means the server has to send fewer chunks.

If you have fast internet, your connection routing to Canada (where Newwind is hosted) is bad, this is a common issue for non-NA players.

To fix, use Cloudflare warp, a free program which routes your traffic through Cloudflare's network. It may increase your ping by a bit, but will likely fix any lag problems.

For example, my internet speed is 158mbps, which is relatively fast, but my internet speed to Canada is only 9.8mbps due to bad routing.
My ping will be fine in hub or if I am not loading chunks, but as soon as I start loading chunks the connection isn't fast enough to handle it, resulting in my ping spiking/lagging out.
With Cloudflare warp enabled, my internet speed to Canada is 108mbps, which is 10x faster, due to the better routing.

Ping Too High:

The primary cause of high ping is physical distance from the server,
100ms+ would be expected for European players and 300ms+ for Australians (Farthest possible country).

Having abnormally high ping is usually a result of using Wi-Fi and being too far from the router.

Try to use a wired connection if possible. If that does not fix the issue, see above section.

Game Randomly Freezes for a Few Seconds:

This is most likely caused by Minecraft not having enough memory assigned.
You can check how much memory you have assigned to Minecraft on your F3 screen (top right corner):

If the second number (4069MB in my case) is less than 3000MB, you need to allocate more RAM.

Low FPS (on Laptop):

• Most laptops limit your FPS when they aren't plugged in, this is very difficult to remove fully.
  We recommend just plugging in your laptop and enabling windows high performance power plan.
• Laptops often overheat, which will cause FPS to drop, check your CPU and GPU temperature, it should always be below 90 degrees.
  To fix overheating, edit your PC fan settings to make them blow faster.
  If you get above 100fps but then get FPS drops after a while, try limiting your framerate in the Minecraft settings to 100fps to prevent your laptop overworking.
  
  

Low FPS:

We have tested how various mods perform in Newwind spawn and during castle (a notoriously laggy event).

High End Windows PC (i5-12400F, RTX 3060) (Minecraft 1.21)

Lower End Windows Laptop (i5-6200U, GeForce 940MX) (Minecraft 1.21)

Here are the recommended performance mods for Newwind (100% free and open source), they require fabric:

• Sodium - This improves chunk rendering and will drastically improve your framerate.
• ImmediatelyFast - This improves entity rendering and will improve your framerate in places with a lot of entities.
• Nvidium - This drastically improves chunk rendering, works best when using high view distances, will not work on older nvidia or amd cards.

There are a bunch of other small performance mods, but none of them will have an effect as drastic as Sodium.
You can also try Optifine, but it takes a long time to update and has minimal performance benefits (see above).

If your PC is especially bad, try using Minecraft Bedrock, which can run smoothly on even the lowest end computers.

Network Errors (Incorrect header check, Badly compressed packet, CorruptedFrameException)

This means your connection is messed up, usually caused by a few things:

• Bad internet: Try using ethernet or moving closer to your router.
• Antivirus software: You can find a list of software which causes issues with minecraft here.
• Custom clients (Feather, Lunar etc.): Try playing with vanilla and see if the issue still occurs.

The Server Is Lagging:

Server lag on Newwind is rare, but still possible. If multiple people online agree that the server is lagging please report it.