Posting this again cause the GTAV mods won't approve my post

Hey guys, so I know (or I think) this mission is known to glitch a lot of some reason. The first time I played it worked fine up until I got to the helicopter pad– then Mike just did a staring contest with Rocco. It wasn't frozen really...everything was moving, but the cutscene or whatever is next just wouldn't trigger and I couldn't move Mike at all.

I tried it again, this time changing a couple settings (like turning on VSYNC). Besides it still freezing on the helipad, now I couldn't hear Richard on the phone when he calls you after you leave...idk why. 

Tried it AGAIN, this time killing all the people on the roof that can sound the alarms. Did that– nothing changed. Couldn't hear Richard on the phone (I did get his text both times though. And I could hear traffic, the car radio etc.) I also tried coming up to him on the different side of the roof, but he does the same thing; slightly turn his body and stare at me. I also tried minimizing it for a bit and coming back, didn't do anything. I'm on PC, my GTA has never glitch before...like at all. 

I apologize if this is a frequently asked question on here– I'm not in this sub. I just wanting to know if anyone can help or if I'm cooked. Thank you in advance lovely people🙂

Mr. Richard mission glitch...again (GTA V)