Skate 2 [BLES00461]

(I'm new here so I don't know what is going on in this topic.)

I really like Skate 2 and RPCS3 is the only emulator that plays it well but I have so many problems such as:

Stutter fps. (Whenever I'm just riding around like you do my fps randomly drops a few fps let's say it randomly drops 5 fps even when my player is completely still.)
Slow-Motion. (When I go to parts of the map that give me like 25 or more fps the game speed turns to slow-motion like speeds.)

So sometimes those problems just annoy me so I can't play like you would play it on Xbox 360 or PlayStation 3 and obviously like anyone else this would just annoy people if Skate 3 or EA Skate wasn't playable but Skate 3 and EA Skate give me a good 30 to 60 fps BECAUSE it is playable I just hope that the people at RPCS3 can get around to make it more optimized.
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~Zendex

PC Specs:
Intel Core i7 870
2.93 GHz
8 GB RAM
64 Bit