NovaStack Performance+
by NovaStack
NovaStack Performance+ targets frame-time spikes in areas crowded with mobs and dropped items, and runs on the client only.
What it does
The mod reduces the processing that entity-heavy areas demand, so the client spends less CPU on mob activity and frame times stay steadier. Its main focus is the performance cost of large numbers of mobs and dropped items. Chunk loading and memory use are also part of the optimisation work described for the mod.
The gains are most visible around mob farms and grinders, where entity counts stay high. In low-entity scenes the effect is small, and vanilla gameplay is kept intact. Results depend on hardware and on which other mods are installed. The mod is meant to sit alongside other optimisation mods, and it can modify rendering behaviour. Fabric API must be installed for it to load.
NovaStack Performance+ is published for Fabric only, for Minecraft 1.21.10, under the MIT License, which means the code is not open source. Only the client needs it; a server running without it works as normal.
Key features
Entity processing reduction
Skips unnecessary entity work in crowded spaces, lowering the load on the processor.
Mob-heavy scene tuning
Targets the spikes that appear around mob farms and grinders, where many entities update at once.
Steadier frame times
Aims to keep frame-time variation smaller in entity-heavy areas, though results vary by setup.
Rendering adjustments
Changes how some rendering work is handled while leaving the rest of vanilla gameplay unchanged.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Mob farms
Players running mob farms or grinders can use the mod to reduce the cost of many entities updating together.
Who it’s for: Players with entity-heavy bases, farms or grinders, who run the Fabric loader for Minecraft 1.21.10 and want to reduce frame-time spikes on the client.
How it compares
Xodium is a Fabric client-side mod for 1.21.11 under All rights reserved and not open source. Light Core is a Fabric client-side mod for 1.21.4 – 1.21.11 under All rights reserved and not open source, so a player on 1.21.10 can only pick from Light Core's range for this version.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| NovaStack Performance+ | Fabric | 1.21.10 | Client-side only | 2026-06-04 |
| Xodium | Fabric | 1.21.11 | Client-side only | 2026-03-28 |
| Light Core | Fabric | 1.21.4 – 1.21.11 | Client-side only | 2026-03-20 |
Questions
Does NovaStack Performance+ need Fabric API?
Does the server need NovaStack Performance+?
Which Minecraft version does the mod support?
In the catalog
NovaStack Performance+ is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 15,569 mods support Minecraft 1.21.10.
More from NovaStack
Similar mods
What the author says
NovaStack Performance Mod is a lightweight optimisation-focused mod for Minecraft 1.21.10 designed to improve performance in entity-heavy situations while keeping vanilla gameplay intact. The mod primarily focuses on reducing performance impact caused by large numbers of mobs and dropped items.
Official listing
- Modrinth page
- modrinth.com/mod/nova-performance-plus
- Owner
- NovaStack
- Published
- 2026-03-29
- Updated on Modrinth
- 2026-06-04
- Facts verified
- 2026-10-15