Trail renderer snaps to higher width when pressing shift

[lgarczyn]

solution 1:

get widthVsTime
store it
whenever width changes
add the width change to a list with timestamps
every update, recalculate a widthVsTime, accounting for bad stuff
for every time change, add two animation node with the interpolated time and correct tangents
  then multiply each node depending on the multiplier history

solution 2:

have a ring buffer being pushed a width each frame
  how do I sample it?
create a curve from it and samples of original curve
aliasing risk

solution 3:

each node has a widthMultiplier data as well as an age, zero allocation
https://assetstore.unity.com/packages/vfx/particles/smoothtrails-141291#reviews

node already have that data surely?