Minecraft Java - single player - Local installation vs playing from server performance

Mine is an old pc and when using some redstone and water flow based farms it is becoming laggy - CPU utilization in task manager is 100%; rest of the metrics seems fine. Even when exploring with rockets and elytra maps are loading very very slow. SO I was thinking if I can host the minecraft server version in cloud like amazon and play from my desktop.

How will the performance vary? Will the CPU load decrease completely? How does Minecraft work - CPU and redstone tasks, world generation when exploring etc. work in server and only GPU/graphics load on my local machine? Will this benefit. Is it CPU bottleneck or GPU?

My machine is AMD Phenom II X4 945 (10-12yrs old PC) - but has SSD and basic GPU card. 4GB dedicated to MC launcher and total I have 8GB physical ram in local machine. I am already using optifine with Tlauncher

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Why does my Minecraft lag on single player but not multiplayer?

If you are experiencing lag in Minecraft in the single player mode of the game, the reason behind it is mostly the same, i.e. unavailability of adequate resources.

Does modded Minecraft run better on a server?

This is usually caused by a slow or inconsistent Internet connection or by a slow server. This means the information is not transferring between your computer and the server that you're playing on as quickly as it needs to.

Why is Java Edition so laggy?

For version 1.18, JRE version 17 is required. At least 1 GB of RAM allocated for the server to run ( -Xmn 128M -Xmx 1G ). If you are using Windows or a desktop-based Linux distribution, you should have at least 1 GB of additional physical RAM in the computer, so the graphics on the desktop don't become laggy.

Minecraft: Java Edition Performance Analysis

Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Kelly L, Kelly L, Kelly L, Tholaal Mohamed