Mouse cursor lag (very noticable)
So I'm trying to solve this problem for about 5 hours now with no luck.
Basically, the coordinates of the cursor (from the Get Mouse Position node from player controller) are lagging several frames behind the position of the cursor that I see on screen.
I first noticed it when I made a movable UMG widget, and I thought "okay.. UMG is perhaps a little delayed in the renderer".
So then I tried some of the normal draw HUD functions and the draw debug functions and all had the exact same result.
So I figured the problem must not be rendering but the actual x,y coordinates from the Get Mouse Position node are the coordinates of the cursor from several frames ago (definitely feels like a lot more than a 1-frame lag btw).
At first you could think this is a mouse acceleration issue, there is even a big thread in the UT4 forums about how unresponsive the input in UE4 is compared to older game engines but the issue I'm currently having right now seems to be something like a frame buffering issue.
So my question is: where is this delay coming from?
Here is a simple test you can do with blueprints. (in HUD blueprint)
And this is the result (animated GIF, you might need to wait for it to load):
As you can see if you move the mouse fast enough the difference can get over 30 pixels in distance.
If your game relies in fast precise clicks this is going to cause huge inaccuracy.
asked Dec 12 '14 at 06:30 PM in Bug Reports
I was able to reproduce this issue on my end. I have written a report (UE-6675) and I have submitted it to the development team for further consideration. Thank you for your time and information, I will provide updates with any pertinent information as it becomes available.
Make it a great day
answered Dec 15 '14 at 03:30 PM
Rudy Q ♦♦ STAFF
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