Gran Turismo 5: Academy Edition [BCES00569]

I've been testing and to have an almost stable GT5 play.
My Specs:
Ryzen5 2600 Stock . 6/12
RTX 2070.
3000Mhz ram

I have found a few bugs that can be replicated very easy

RPCS3. 15-12120
GT5 full updated
- using:
SPU: SAFE
SPU Threads: 1
- some perfomance issues but more stable, and no audio shuttering while racing
- it craches on with "SPUThread, stop_go" when you buy a car in "Used Cars Dealership".

Using SPU: MEGA
SPU Threads: Tested all
- nice performance, in racing. but causes Micro Shuttering while racing.

Testing an old version
RPCS3. v.0.14
GT5: Not updated
Using SPU: MEGA
SPU Threads: 2
-Major perfomance improving, no shuttering while racing, can buy car in "Used Cars Dealership". but RPCS3 craches for some other reason that is not SPU related, i think.

both versions of RPCS3 using liblv2.sprx

My thoughts on the SPU, is that the SPU: MEGA version of 0.0.14 was more performance tuned and no audio issues
latest versions of 0.0.15 its impossible to use MEGA without having shuttering audio.

Later im gona test a bunch of more configurations, including GT5 removing any updates.