When editing the settings -- on the "Other" tab -- various speeds can be set.
However, I cannot increase many of the speeds above 100 percent. Namely...
Solid Infill Underspeed
Support Structure Underspeed
I want to increase the support structure speed to 110% but I cannot. 100% is the limit. Why?
A user should be able to speed up and slow down every type of operation (outline, infill, support structure, whatever! etc.).
This would give maximum versatility in creating fast, quality prints.
I tried a workaround of boosting the default print speed, then adjusting the underspeeds. This does not work as it throws off other portions of critical print speeds.