Yeah, that sounds like the device just might not be up to the task. That laptop graphics processor seems to be about 12 years old, so that it not really something that I would expect to run the game well. I have a similarly old laptop that I have tested the game on, and it also doesn't run it very well. While RPG Maker games are often very light, this one is not, as it has a lot of advanced processes happening that are not typical for an RPG Maker game.
That said, there are many performance settings in the options menu which may help, such as disabling lighting, weather effects (including the falling leaves animation), screen filter, fog, and so-on. Disabling some of these may help. The tentacle animations are unlikely to be the culprit, as they all share a single sprite sheet, so their performance impact is very low.
There are options in the settings menu to configure your gamepad. You can change the sprint to any button on your gamepad if it isn't set by default.
I don’t know. Maybe, I can adjust the setting–as the customer/player side. But, I suggest you to figure it out in how to improve the performance of the game. So, people can play your game seamlessly. Not all of them having that RTX graphic stuff. Since your game will be a hit and stand among those popular games like stardew valley. My laptop is not that old Chris, it’s only around 5 years old.
After all, good luck with the development! You did an amazing job!