There is a mod "driving and flying realistic" it changes handlings for each car - you can check it. If you make a backup of 3 files you can have even better GTA than you could imagine.
And with that popping thing...
in commandline.txt type this:
Just do that, only that and if it's still wrong than chose another type of settings from icenhancer mod (mid, high, low) you have downloaded.
If it's still bad use that timecyc I was talking about.
But I think that commandline would be enough. (don't ask me what it means, those commands I don't know
It worked for me well