First, let's decode the slang. is shorthand for Version 5.5.0 Update . In software versioning, "5.5.0" is often verbally shortened to "Five Five Zero." The "upd" simply stands for "Update."
Some users claimed the update caused input lag on the slider. This was isolated to a specific beta build (5.5.0.3) and was fixed in the public release (5.5.0.4). capcut 550 upd