Sustain problem

[GamemakerX1]

Many instruments have problems with sustain, which in my opinion hinders the creation of sequences and the sound of the instruments.
The instruments with problems are:
-Harpsichord
-Ragtime piano
-Music Box
-Vibraphone
-Electric Guitar
-Steel Drums
-Bass
-Slap Bass
-Jazz Guitar
-Muted E-Guitar
-Sitar
-Koto
-Concert Harp
-Fckin Flute
-Saxophone
-Church Organ

See what i am talking here:

They have different problems, but they revolve around the same thing: the invariability of sustain. I tend to avoid creating sequences with them because we cannot change the duration of the notes with the website's system. It does not vary. This is annoying because there are several interesting instruments that could make cool sequences, but instead they ruin the sound, sometimes being too short or too long or cutting of the sustain.
Se isso pudesse ser consertado várias portas poderiam ser abertas para a expressão da criatividade na música.

Most of the instruments mentioned in the list were created before the sustain update. Some of them would be impractical to have sustain while others that do would need sustain version. I would try to use the older instruments as elements as a work around. as far as sustain, you have Chiptunes, Synthisizer, the Sustain Piano, Brass, Strings, Guitars, and Synth Leads. you can also sudo sustain the sounds by adding more notes to make the sound longer.