I have done some testing with similar parameters as shown earlier.
Nine entries, switching between sections like character/creation or the
new sheet options cogwheel at the top left, to see which setup works the
fastest or slowest. The setup used for mouse-over lag testing above.
Here is something interesting. The attack section, which has the least
amount of expandable elements, just the Attatcher. Has the fastest
reaction on mouse-over testing. With Feats that has multiple expandable
sections in each, being slower. Equipment too, has a similar mouse-over slowdown. The proficiencies tab, of course, is by far the fastest. Having little to no effect on the sheet when it is open. Furthermore, by move your mouse into an expanded part, such as this attack above, the cogwheel in the box Potential theory: Do the amount
of expand sections, such as the attacher, mods, etc; Add to slowdown?
I'm dubious on this one. And I cannot test with a control that has no
such expandable sections from this end. Also, if you place your
mouse at the very right, where the cogwheel appears. Right by the + on
ATK3+, so ONLY the cogwheel appears. You can move your mouse down at
high speed. And each entry's cogwheel will react fluidly and instantly.
When the field is expanded like in the second image, you can move your mouse in and out of
the expanded box, and the cogwheel appears instantly. But touch the gray lag test attack bar below the expanded box, through the middle and the standard mouse-over delay occurs. This test works on all sections, even the spell section if one creates a power or spell. Avoid the expand widget and activate just the cogwheel on the right side, and it pops up without delay. Conclusion: I
believe this little expandable widget that lets you write a description
beneath an entry, may be responsible for some of the slowdown. As this
is the part that has a large delay in appearing. And we have just proved
that the cogwheel itself is capable of appearing instantly if the
expand widget is avoided by moving in from the far right. As such, changing this element, or attempting a version where it is removed, may show a lag improvement. In
the same manner of testing. Switching from character/creation or heading
to the sheet option page and back with the Spells/powers open, even in the below empty
state, imposes considerable slowdown. Observe,
no power entry added. and no spell check-boxes selected. Switching
between character/creation etc is considerably slowed in this state.
Checking all ten boxes to reveal all spell levels, adds further very noticeable delay when switching to sheet options and back, or character/creation. It also slows down using the + markers to add new entries while it is open. Potential conclusion: The
check-boxes mere presence have an oddly heavy load. Which may be
combined further once one starts adding powers and spells To make the
situation even worse. There is also the fact that all spell levels open, without entries creates significant slowdown. This part is far too deep for user-end trials, so
dev exploration into code or alternative setups is likely the only way to find
out more.