Works like a charm, thanks 
From my side I also found out that I wasn't really at a maximum perfomance settings, there was something called "Power4Gear High Performance" but there were additional hidden modes including a "High Performance" mode which made things way better for Wind Waker, but I still had unstable FPS for Kirby on some parts. 3x IR was enough to solve it though and I can stay with VSync. I tried Progressive Scan and it's actually locking FPS to 30 for some weird reason (only tested on Kirby). Skip CPU access to EFB enabled makes VPS go up a lot but I'm worried it will hide some special effects without me noticing so I keep it off until I still have problems.
But again, thanks a lot
From my side I also found out that I wasn't really at a maximum perfomance settings, there was something called "Power4Gear High Performance" but there were additional hidden modes including a "High Performance" mode which made things way better for Wind Waker, but I still had unstable FPS for Kirby on some parts. 3x IR was enough to solve it though and I can stay with VSync. I tried Progressive Scan and it's actually locking FPS to 30 for some weird reason (only tested on Kirby). Skip CPU access to EFB enabled makes VPS go up a lot but I'm worried it will hide some special effects without me noticing so I keep it off until I still have problems.
But again, thanks a lot