It sounds like the issue you're encountering could be related to the settings in the Professional Firmware you updated on your Ender V2 Neo. Here are some steps you can take to troubleshoot the issue without reverting back to the Creality firmware:
Check Retraction Settings: Make sure your retraction settings in the slicer software are not too aggressive, as this can cause issues with the filament not adhering to the bed properly. Try adjusting the retraction distance and speed to see if it improves the print quality.
Bed Leveling: Double-check the bed leveling on your printer to ensure that it is properly leveled. Sometimes, even a slight adjustment can make a big difference in print adhesion.
Print Bed Surface: Consider trying a different print surface on your bed, such as a PEI sheet or a glass plate, to see if that improves adhesion.
Update Slicer Settings: Experiment with adjusting other slicer settings like print speed, layer height, and initial...
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