I have an OrturLM1, and you have a Ortur LM2. My controller setting for $130 & $131 are different, ( Max X&Y travel, size of bed ). But that should not be your issue. My $3=1. ( Step direction invert, mask). Not exactly sure what that does … But your settings look good to me. So to restate your problem… “one minute its flying around way too fast, then the next its moving at a snails pace”. IS this correct?
Can you get us some screen shots of a simple job, like the word “test”. Create new document, type word “test”. Capture “cut settings” and also Preferences screen. And another “$$” output from the controller?