It work for me, but I don't have spd run badge

Okay it seems to work now, although i'm doing the exact thing as before, seems to be a finicky thing, i get it more consistently the faster i select the save files. Whatever, thanks

@Dampfsalzig
it works you have to note that you need 1st to save the game then play it for like 5 to 7 mins then do the glitch. It was working for me like this. The wrong thing I was doing was that I save the file then sometimes take a break and continue it and that was the problem for me.
As a test all you need to do is :
1-) start a mission
2-) Save it manually
3-) Keep playing for like 5 to 10 mins depends what the challenge is
4-) Auto save
5-) press Esc to go the menu then Restart
6-) Load the manual save
7-) load the quick save

Yeah the time reset isn't working for me either

@No0bs_Satanic
Make a manual save right at the beginning of the mission, then play to the point where you want to reset the time (be careful not to exceed the time needed to achieve the badges, I already wrote in the comments section below) make a quick save here, restart the mission, load the manual save from the beginning of the mission and right after load a quick save . So the answer to your question if you can overwrite the manual save from the beginning of the mission is NO. I hope it's clear enough, if it still doesn't work, let me know :).

never mind it seems I have been doing something wrong. When I do the 1st Save can I overwrite an old save or does it screw over the glitch ?

Hey @No0bs_Satanic!
I just tried both methods and they work perfectly , which step or method do you think doesn't work?

its not working anymore sadly

I'm glad to hear that @Пацифист ;)

Спасибо! Это сработало!
Thanks! It works!
Díky! To funguje!