AMD Ryzen 7 3750H with Radeon Vega Mobile Gfx

[I'mDirtyDan]

I'm stuck on 48 fps on every graphics setting... I deleted the hd textures and tried again... still stuck... I can play metro exodus on ultra... but I can't play this on low? any idea whats up?

[𝙎𝙥𝙖𝙧𝙩𝙖𝙣𝙨]

Try reinstalling the game and with high settings or reinstall your pc drivers to the latest latest versions ! XD)

[sdack]

This sounds like you have a 144Hz monitor and somehow managed to enable vsync three times or so: 48 x 3 = 144

Either cap the refresh of your monitor at 60Hz and check all your vsync settings. Or you can install the High FPS fix and run at 144Hz / FPS:

High FPS Physics Fix and Load Accelerator - https://www.nexusmods.com/fallout4/mods/44798

[Iron Knights]

I am not aware of any specific Vega issues with the game.
But this is the rule of thumb to push you out of low FPS, in high traffic zones, as this game does not have a "steady fps" setup. Presuming monitor with higher than 60hz refresh rate.
1) Turn off V-Sync, enable Enhanced Sync in driver.
2) Turn off V-Sync in the game.
3) Turn decals to medium & godrays to off if you can.
4) Cap FPS to 144 or 120 from drivers (monitor frequency). Past 120fps you will start to experience animation & script acceleration, graphics & voice.