added comment

PowerGDEditor/src/main/java/xyz/tbvns/Models/GDInstance.java

@@ -34,6 +34,7 @@ public class GDInstance {
         instance.userData = this;
     }
 
+    //TODO: Make this not break if the speed change in the middle of the animation
     public Model getFrameOnPercent(double percent) {
         double usablePercent = percent - (start / 100);
         if (usablePercent > 0) {