Horrible lag in 2d roguelike character movement

Hello FragMental,

I had the exact same issue tonight while reaching the step 11 of the tutorial. I tried to build the game for windows and my unity stoped working. I killed the process and launched a new instance of unity.

The only loss I had in the process was my "Main Camera" parameters and the Player who disapeared from my hierarchy. I linked back my GameManager prefabs to the Main Camera and put my Player prebad in the hierarchi and here we go, problem solved.

The only one advise I could give you is to try to create a new scene, remake the steps I did and try.

Hey everyone,

I know it's been years but I thought I'd leave my experiences here for any future dwellers.

Basically I had a similar issue as stated by @Fragmental where my character would move super slowly (about 3 seconds per step), and if I input move commands while moving, the character would then do the aforementioned "weaving".

I downloaded a run time Log Viewer by Dream Makers Group to dive into what was really going on.

So basically what I found was that the game was running at 600 fps. It was running at 600 fps as a result of selecting the build option 'Fastest' when building the game. Not sure why that happens though. Anyway, setting the build options to 'Beautiful' made the game run at 60fps, and then everything worked fine.

The reason why things didn't work as well at 600 fps can be described by the following post: https://answers.unity.com/questions/10993/whats-the-difference-between-update-and-fixedupdat.html?_ga=2.82499414.1351522315.1569119747-984558385.1533734503

If you ever stumble across this, do try this solution :) And go Unity! You guys rock.

I am encountering the same problem in the editor even when running the fresh out the box "completed project". (like stated above, when built/ran it seems to run fine)

I believe rb2D.MovePosition(newPostion) in the SmoothMovement function in MovingObject seems to be the problem. The position doesnt seem to be updated every time SmoothMovement is called. based on the docs, it says that the 'actual position change will only occur during the next physics update'. Is it possible that the physics update isnt happening every call when ran in the editor?

I fixed this by changing

 rb2D.MovePosition(newPostion);

to

 rb2D.transform.position=newPostion;

The cause of the problem is the FPS going too high during the build. To fix it, create a new script called TargetFrameRate and attach it to your GameManager prefab:

TargetFrameRate.cs

 using UnityEngine;
 using System.Collections;
 
 public class TargetFrameRate : MonoBehaviour {
     
     public int target = 60;
     
     void Start()
     {
         QualitySettings.vSyncCount = 0;
     }
 
     void Update()
     {
         if (target != Application.targetFrameRate)
         {
             Application.targetFrameRate = target;
         }
     }
 }

This will basically force the application into 60fps, resulting in smooth scrolling. Hopefully this can be marked as the correct answer @Fragmental.