Oh so the 3 of us are ROG Ally owners? ACSE as in Armory Crate? I wonder if other Z1E devices like the Legion Go are experiencing any issues...
If that's the case it shouldn't be impossible for the devs to solve.
I played the game for a couple of hours last night, messed around with every graphics option, resolution and VRAM allocation on the Ally X and it genuinely made no difference to address the drops. They just keep happening.
I'm as far as the desert world now. I'm noticing the drops i) straight after loading a new area, ii) if it's a bigger area like the long hallways with turns I'm noticing drops as it loads later parts of the level, iii) when using the upside down monkey rails, I've noticed that if the camera has to pass through it from the top to under it it's like the alpha/transparency effect is causing a slowdown. I think each time I die and reload the level a slowdown is occuring too.
But I will say these performance drops are severe and disappointing but I'm in a habit with the game now which is every time I walk into a new area I just spin the camera wait a couple of seconds for the FPS to tank and then it climbs back up to 120fps. It's annoying, and there's genuinely no excuse for it with a game as simple as this but I'm still ploughing through the game and grateful to have supported the Devs by buying it! <3
Now, we should only hope the Devs are examining these forum posts or we should try reaching out and seeing will they support us and see can we get our performance fixed.