New ticking system, fixes Replay mod issues.

src/main/java/software/bernie/geckolib3/model/AnimatedGeoModel.java

@@ -5,7 +5,6 @@
 import com.eliotlash.molang.MolangParser;
 
 import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.util.GlfwUtil;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.LivingEntity;
 import net.minecraft.util.Identifier;
@@ -25,6 +24,7 @@
 import software.bernie.geckolib3.model.provider.GeoModelProvider;
 import software.bernie.geckolib3.model.provider.IAnimatableModelProvider;
 import software.bernie.geckolib3.resource.GeckoLibCache;
+import software.bernie.geckolib3.util.AnimationTicker;
 import software.bernie.geckolib3.util.MolangUtils;
 
 public abstract class AnimatedGeoModel<T extends IAnimatable> extends GeoModelProvider<T>
@@ -52,16 +52,13 @@ public void setLivingAnimations(T entity, Integer uniqueID, AnimationEvent custo
 		// Each animation has it's own collection of animations (called the
 		// EntityAnimationManager), which allows for multiple independent animations
 		AnimationData manager = entity.getFactory().getOrCreateAnimationData(uniqueID);
-		if (manager.startTick == null) {
-			manager.startTick = getCurrentTick();
+
+		if (manager.ticker == null) {
+			manager.ticker = new AnimationTicker(manager);
 		}
 
 		if (!MinecraftClient.getInstance().isPaused() || manager.shouldPlayWhilePaused) {
-			manager.tick = (getCurrentTick() - manager.startTick);
-			double gameTick = manager.tick;
-			double deltaTicks = gameTick - lastGameTickTime;
-			seekTime += deltaTicks;
-			lastGameTickTime = gameTick;
+			seekTime = manager.tick + MinecraftClient.getInstance().getTickDelta();
 		}
 
 		AnimationEvent<T> predicate;
@@ -156,9 +153,4 @@ public void setMolangQueries(IAnimatable animatable, double currentTick) {
 			}
 		}
 	}
-
-	@Override
-	public double getCurrentTick() {
-		return GlfwUtil.getTime() * 20;
-	}
 }

src/main/java/software/bernie/geckolib3/util/AnimationTicker.java

@@ -0,0 +1,19 @@
+package software.bernie.geckolib3.util;
+
+import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents;
+import net.minecraft.client.MinecraftClient;
+import software.bernie.geckolib3.core.manager.AnimationData;
+
+public class AnimationTicker {
+
+    private AnimationData manager;
+
+    public AnimationTicker(AnimationData manager) {
+        this.manager = manager;
+        ClientTickEvents.START_CLIENT_TICK.register(this::onTick);
+    }
+
+    private void onTick(MinecraftClient minecraftClient) {
+        manager.tick++;
+    }
+}