Since the release of Minecraft 1.18, the performance on older computers such as PCs and Macs from 2012 to 2016 with dual core processors is slow, sluggish and very laggy making the game somewhat unplayable. Because these older computers ran Minecraft very smoothly back on Minecraft version 1.8 to around 1.15, then this means that Minecraft is a poorly optimized game on 1.18, 1.18.1 and 1.18.2. Please make this more optimized for our hardware and make it be able to use all CPU and GPU cores effectively so that the frame rate is better.
MC-248869
Poorly Optimized Performance
Resolved
Invalid
0
Thank you for your report!
However, this issue is Invalid.
Performance drops are expected to happen between versions, especially in snapshots. Simply stating that "My game is laggier" is not helpful for Mojang to diagnose your issue. If you can pinpoint a specific cause when lag happens for you, please open a new report for that specific issue. If you think this might be a hardware issue please contact Community Support as they might be able to help with your issue.
Keep in mind that Mojang is constantly optimizing the game and simply playing the game provides feedback to Mojang on which parts cause performance issues. To learn more about this, head here (section "Telemetry") for more information.
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