This! I vote this! This problem can be experienced in ANY race at ALL tracks with a pit lane. The lag that occurs every time someone pits as well as the change in wear rate/car handling is a serious issue.
Another issue with pit stops is selecting options. During races that begin with a qualifier, racers using controllers (DS3, "sticks") are not given options on the screen to select tires/desired fuel amount when they enter the pit lane, while drivers using racing wheels experience no issue.
All of these problems should be at the top of PD's fix list, along with many other online bugs. PD seems to desire pleasing car manufacturers by updating interiors, bodies and car colors while the online issues are seemingly not getting any attention. I've found no way to contact PD directly to inform them of these issues (as if they don't already know (and I'm sure they are well aware)).
So here's a message to Polyphony Digital:
Please stop worrying about minor "hot fixes" and adding new cars until you solve the issues with online gameplay. We've seen no attempt at any online fixes yet and some players are getting frustrated to the point of not wanting to even play the game anymore. If these problems continue to exist, you will surely lose support from the online community.
^^ not like PD actually reads any of this anyway, but maybe we will get lucky. lol