Still having problems with Fixed Frame Rate in 4.11 Preview 8. Let’s hope it gets fixed for the final 4.11 release…
Did you ever manage to fix this or find a workaround? I’m moving pawns the way you do here (C++, no BP) and it goes rocket fast when Fixed Frame Rate is on…
This has been fixed in an upcoming full engine release.
This is great news! In which engine version can we expect it to work?
It has been marked and verified for 4.11.
was this ever solved? 5 months in and I’m realizing my physics game might be ruined because of this issue.
This solved it everywhere for me. Super simple solution. You will have to change any addforce or break force values to work how you want them to feel with the new fix, but from then on it will work perfectly across all platforms at all performance.
The issue you are referring to is different than the issue that is being reported. This was specifically to address the Fixed Frame Rate bug, and not trying to tweak the users max FPS.
I was having same problem on my VR game. When I checked “Used Fixed Frame Rate” it would work. I could tell because the frame rate on my motion controllers stayed down at the set amount. Then if I closed and re opened Unreal everything physics would be running twice as fast and justering and my motion controllers would be back up at a super high FPS and juttering randomly. I checked the config file and everything looked good there. I got a work around by putting a console command on the level start
t.MaxFPS=50
Or what ever frame rate you are trying for.
Hope that helps 
Hello, I’m Using 4.17.2 and still have the same issue. I’ve experienced that issue back to 4.15 and could fix it by magically just checking/unchecking the “smooth Frame Rate” box. Although that wouldn’t work each time.
Now I’m using 4.17.2, that “trick” doesn’t work anymore, the frame rate is still locked at around 120 fps, and if I check the “Use Fixed Frame Rate” box, I can have my desired frame rate (Which is 90fps as I’m working in VR).
However, I almost have the same issue as @lennysunreal have mentioned before (Mar 28’17), My physics is completely messed up, but not like @lennysunreal, it hasn’t been speed up but slowed down, like everything was underwater.
Another Oddness, this happens only when the physics is played under a certain height (around 50~ 60 cm).
I hope my report helps to find out what happens, because it’s already been a long time that this issue has stuck around.
Max.