Recently upgraded to the oled. Only game that default runs 90 is hades. Do I need to change a setting somewhere for games like binding of Isaac, Skyrim, Dave the diver etc to push 90. They all just do 60 out the door.
Some games are limited to 60, Some might need to be unlocked. PCGamingWiki is good reference
Those games mentioned are just capped to 60FPS by the developers. You can mod Skyrim to run with an unlocked frame rate, but the physics gets wonky IIRC.
Some games have limited framerate due to graphical/physics engines relaying on framerate to calculate stuff. If you push the game to run faster than its internal “clock”, you might end up with everything speeding up randomly, scripts not triggering (automatic door won’t open after cutscene, for example) or physics doing weird shit (objects, dead bodies, vehicles launching into space/glitching out on impact). You don’t need wikipedia to figure out your game. Go to game options, check if there is a slider or an option to make the game run at 90 frames per second. If there is none, chances are that the game is framerate-locked. You can try disabling v-synch, some old games have v-synch synching only up to 60fps. After disabling v-synch, make sure you are limiting the framerate withink steam deck settings for the game, see if that works.