Repeating group too slow

[yuta]

i create this app SPA(Single Page Application)

when i load not many items of repeating group,
every workflow is smooth.

but when i load many items of repeating group,
some workflow is really heavy.

can someone fix it??

■some workflow is really heavy. (loaded many items)

RG too slow

■every workflow is smooth. (loaded not many items)

RG not slow

i think,
if i can reset repeating group after load full items of repeating group,
i can fix it.

anybody know how to reset repeating group??

for example.

repeating group A (loaded 100 items)
↓
clicked "element B "
↓
Hide “repeating group A”
↓
reset “repeating group A”
↓
clicked "element C "
↓
Show “repeating group A” (load from the beginning)