With newer Snapmaker Firmware you do need to use the GRBL Device Profile.
The “Snapmaker (Marlin)” Device profile was made for older Firmware versions when they were still Marlin-based.
Snapmaker posted newer .LBDEV files here.
These device profiles have an error:
You must activate ‘Emit S Value with every G1 Command’ in the Device Settings:
See this post for more info:
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