LSFG-VK not working on Steam Deck LCD

So I have the steam deck LCD and I've tried to run the lossless scaling on a few games - Thief Simulator, Dishonored 2, Dying Light, Star Wars Battlefront 2. As I try to multiply the fps by any amount, the fps counter doesn't change. I have tried all the available workarounds in the options but nothing seems to work. I've tried reinstalling decky, the decky plugin, the lossless scaling app. I have bought the Losless Scaling app on steam and have changed it to linux_testing. Thank you for your help!