On this page
Quick Answer
Mobility reduces the movement-speed penalty of skills you can cast while moving — it does not increase your normal walk speed, it just makes moving-cast skills less sluggish.
Deliberation adds a chunk of More Damage but increases the movement penalty, so you trade clear smoothness for raw damage.
They occupy the same support category on a skill, so you usually socket one or the other, not both, on a given skill.
Support Comparison
- Mobility
- Core
- Reduces the movement-speed penalty of skills usable while moving.
- Does not raise base move speed; it only softens the penalty.
- Best when you want to keep casting while kiting.
- Deliberation
- Situational
- Adds More Damage to the supported skill.
- Increases the movement penalty, making moving-cast clumsier.
- Best when you can stand and output, or when the damage outweighs the penalty.
Requirements
Both are support gems slotted into a skill that supports the relevant skill type. They only matter for skills that have a movement-speed penalty while used on the move.
Movement-Casting Tradeoff
Some skills let you act while moving but apply a movement-speed penalty shown on the skill itself. Mobility's 'less movement speed penalty' reduces that penalty; it is not a generic speed buff.
Deliberation's More Damage is attractive, but its extra penalty means you move slower while using the skill — which can cost you output windows if you have to dodge.
Crossbow reload is a separate action and is not the same as using a movement-cast skill; the penalty only applies to skills that explicitly allow moving use.
- Penalty is on the skill, not your walk speed.
- Mobility softens it; Deliberation worsens it for damage.
- Reload is a different action from moving-cast.
Valid Skill Matrix
| Skill | Can socket | Movement penalty | Mapping result | Boss result |
|---|---|---|---|---|
| Spark | Yes | Low | Mobility smooths clear | Either works |
| Galvanic Shards | Yes | Medium | Mobility preferred | Deliberation if standing |
| Shockburst Rounds | Yes | Medium | Mobility preferred | Deliberation if standing |
| Explosive Grenade | Yes | Medium | Mobility preferred | Deliberation if standing |
| Ice Shot | Yes | Low | Mobility smooths clear | Either works |
| Twister | Yes | Low | Mobility smooths clear | Either works |
Damage Scope
Deliberation's More Damage applies to the skill's hit damage. Whether it affects Damage over Time, explosions or secondary damage depends on how the skill's damage is structured.
A tooltip damage increase does not always mean higher practical DPS if the movement penalty forces you to stop attacking to dodge — the lost uptime can outweigh the raw multiplier.
Test the skill on a dummy: compare tooltip damage against real clear and boss time with each support.
- More Damage hits the skill's hit damage.
- DoT, explosions, secondary may not all scale.
- Tooltip gain can be lost to downtime.
Mapping Decision
In open maps, Mobility is usually better: you keep moving and clearing, and the smoother movement prevents deaths more than a damage multiplier helps.
If a map lets you stand and delete packs, Deliberation's damage is fine, but most mapping favours mobility.
- Open maps: Mobility for safety and speed.
- Stand-and-clear maps: Deliberation acceptable.
- HC or low defense: Mobility.
Bossing Decision
Against a boss where you can stand and output, Deliberation's More Damage pays off. If the boss forces constant dodging, Mobility keeps your uptime.
High-frequency-dodge bosses favour Mobility; stationary DPS checks favour Deliberation.
- Stationary DPS: Deliberation.
- Constant dodge: Mobility.
- Match the support to the fight.
Controller and Input Notes
On controller or with auto-aim, the value of moving while casting changes: if you naturally kite, Mobility helps; if you tend to stand and aim, Deliberation's damage is easier to use.
Keyboard and mouse players who kite manually get more from Mobility's smoothness.
- Controller auto-aim: Deliberation often fine.
- Manual kite (KBM): Mobility smoother.
- Personal playstyle drives the choice.
Skill Examples
Spark and Ice Shot are low-penalty skills where Mobility barely changes feel but Deliberation adds real damage if you stand. Galvanic Shards and Shockburst Rounds have more penalty, so Mobility matters more for uptime.
Pick the support per skill rather than globally — one skill can run Mobility while another runs Deliberation.
- Spark / Ice Shot: either works.
- Galvanic / Shockburst: Mobility for uptime.
- Mix per skill.
Build Usage
Use Mobility on your main clear skill for map safety, and consider Deliberation on a single-target skill you cast while standing during boss downtime.
The choice is per-socket, so tune each skill to its role.
- Clear skill: Mobility.
- Boss single-target: Deliberation if standing.
- Per-socket tuning.
Troubleshooting
If a skill cannot socket one of them, the skill's category or moving-use flag excludes it. If tooltip damage rises but real DPS falls, the movement penalty is costing uptime — switch to Mobility.
- Cannot socket: skill category excludes it.
- DPS fell with Deliberation: penalty cost uptime.
- No speed gain from Mobility: it only cuts penalty.
- Both not socketing: same support category.
- Reload feels slow: separate from moving-cast.
Community Evidence
Players generally run Mobility on clear skills and Deliberation only when a build stands to output, noting that the penalty often hurts more than the damage helps in real fights.
The most common question is whether Mobility raises walk speed — it does not.
- Mobility for clear, Deliberation when standing.
- Mobility is not a walk-speed buff.
Video Guides
Support Gem Slots
How to Get More Support Gem Slots (0.5)
A guide covering support gem sockets and category conflicts relevant to Mobility vs Deliberation.
What to watch for: Watch how support categories share a socket.
Open source ↗Kalguuran Gem Showcase
Kalguuran Gem Showcase (0.5)
A showcase of support gems including movement and damage supports.
What to watch for: Watch the support gem behaviour in context.
Open source ↗Sources and Verification
GGG official Patch Notes and forums confirming Mobility and Deliberation support behaviour and category in 0.5.4.
PoE2DB and Community Wiki provide Mobility and Deliberation support gem data.
Community wiki pages for Mobility and Deliberation supports.
Reddit and forums surface support gem slot and category discussions.
Patch History
- 0.5.0 (Return of the Ancients): Mobility and Deliberation supports behave as movement-penalty and More Damage tradeoffs.
- 0.5.4 (2026-08): Current baseline: Mobility reduces movement penalty, Deliberation adds More Damage with extra penalty, shared support category.
Changelog
- Initial release: support comparison, movement-casting tradeoff, valid skill matrix, damage scope, mapping vs bossing decisions, controller notes, skill examples, troubleshooting and community questions.
Related content
BuildsSpark CoC Comet Stormweaver Build Guide: Mana, Trigger Setup and Progression0.5.4 trigger toolkit: Spark for clear, CoC Comet for single-target. Covers skill swaps from level 1 to maps, trigger threshold, Mana as resource/defense/damage triangle, MoM/EB/Archmage variant boundaries.bossingcasterearly-endgame
GuidesPoE 2 Support Gem Compatibility: Why a Support Won't Socket or WorkWhy a support gem refuses to socket into your skill, or sockets but does nothing in combat: skill tags versus support tags, socket progression, attribute and weapon requirements, duplicates, and persistent/spirit buffs.mechanicsItemsUncut Gems: Gemcutting Skill and Support Gems in PoE 2In Path of Exile 2 you do not find finished skill gems - you find Uncut Skill Gems and Uncut Support Gems, then 'cut' them at the Gemcutter's Workshop into the exact gem you want (gated by attribute and level). This guide covers tiers, how to cut, and how to upgrade uncut gems.uncut-gems-guideupgrade
Patch NotesPath of Exile 2 0.5.0 — Return of the Ancients: New League, Runes of Aldur and Endgame Rework0.5.0 was the 0.5 series content update: a new League, Runes of Aldur systems, the Endgame rework, new Ascendancies, skills, items and systems. A returning-player entry, not a notes mirror.itemsleaguemajor-updatesInformation is compiled from public web sources and in-game observations; some visuals are original editorial diagrams. External information and images remain the property of their authors or platforms; contact us for removal requests.