Change some settings in preferences 3r2c5l

[plb7777]

Dear developers;

kindly change the settings and options as shown in the picture. and add add another options are
1. "while clicked on snail mode all the starts ing at 10 KB/s or less"
2. speed limits in all the s individually in .



it will be more friendly and beneficial than current one.

[StormJumper]

FDM version?

[Guest]

All version of FDM