I got SteamOS 3.5.7 on my Steam Deck OLED and after installing Appimage of Yuzu through Emudeck, I realized how much better my games run compared to Flatpak I was using for 1.5 years on my Deck LCD. That is not my point here though.

I installed Decky Loader and with setting SMT off/on governor on perfromance from scheduling, it gave me 1fps more in games like Zelda 2 (new one), Kirby and Persona5R (I already got it on Steam but wanted to try out the Switch version too. Steam version is just better. Buy that (-captain obvious)). They gave me max 1 fps more and still had some stutters sometimes. The only thing that stopped most of my stutters was Cryoutilities 2 (without VRAM 4GB) and capping GPU clock to 800-1200mhz.

Has SMT off, Governor on performance and capping CPU GHZ to 3.5 become obsolete or did I do something wrong?

Results I remember:

Zelda 2. Cave 25-30fps docked gpu lock

Persona5R first 15 minutes handheld 60fps with gpu lock (dock was 40-50fps and characters became slower)

Kirby 40-60fps if I remember correctly. 40 when it was making shader thingy

Bayonetta 1-2, Between 50-60 I think.

and some more games

SMT off/on + Governor on performance + CPU lock at 3.5GHz made 0 difference. Max 1fps more with all these 3 settings on.

It was actually fun to not play around with those settings. I just had to leave my refresh rate at 90hz and cap the game to 45fps for Bayonetta 1 and 2. Zelda 2 and hyrule warriors age of calamity 27fps => 81hz (weirdly enough, it was smooth enough)

Question: your experience?