Stuttered a bit in the beginning but then ran w/o issues. A lot more tense than my own entry! Struggled quite a bit until I got my first few upgrades. Light effects worked really well, could have been even more! Was fun - good job!
Yes the CPU particles in Godot give a stutter on the first instance at the beggining for some reason. I even tried preloading and no dice but luckily its minor and only happens in the first few seconds of gameplay :)