PPSSPP texture scaling and auto frame skipping

[belmont1990]

Okay, now everything that I asked is clear, thank you guys

I have yet another question, is there any succesful method of counteracting graphical glitches while rendering res. is set to higher than native?
Lots of text boxes, 2D portraits, fonts gets messed up with some lines/ bars while going higher res.
The only way that clears almost everything of this is xBRZ / Hybrid scaling method, but xBRZ tends to make ugly graphic even worse (like sky in some games get this painted looks instead of beign just smooth)

xbrz 3x is first, scaling of second in the attached screenshots
Compare the sky and font at the lower left, letters looks definitely more clear and better, but sky gets weird... maybe some shader setting could help?
I have gaussian, bloom, colors, gamma correction set to ON, Luma shader.